diff --git a/api/cerc/onboarding/v1/onboarding.pulsar.go b/api/cerc/onboarding/v1/onboarding.pulsar.go
index 30d02d0a..692bdaf6 100644
--- a/api/cerc/onboarding/v1/onboarding.pulsar.go
+++ b/api/cerc/onboarding/v1/onboarding.pulsar.go
@@ -517,8 +517,8 @@ func (x *fastReflection_Participant) Range(f func(protoreflect.FieldDescriptor,
 			return
 		}
 	}
-	if x.Role != 0 {
-		value := protoreflect.ValueOfEnum((protoreflect.EnumNumber)(x.Role))
+	if x.Role != "" {
+		value := protoreflect.ValueOfString(x.Role)
 		if !f(fd_Participant_role, value) {
 			return
 		}
@@ -549,7 +549,7 @@ func (x *fastReflection_Participant) Has(fd protoreflect.FieldDescriptor) bool {
 	case "cerc.onboarding.v1.Participant.nitro_address":
 		return x.NitroAddress != ""
 	case "cerc.onboarding.v1.Participant.role":
-		return x.Role != 0
+		return x.Role != ""
 	case "cerc.onboarding.v1.Participant.kyc_id":
 		return x.KycId != ""
 	default:
@@ -573,7 +573,7 @@ func (x *fastReflection_Participant) Clear(fd protoreflect.FieldDescriptor) {
 	case "cerc.onboarding.v1.Participant.nitro_address":
 		x.NitroAddress = ""
 	case "cerc.onboarding.v1.Participant.role":
-		x.Role = 0
+		x.Role = ""
 	case "cerc.onboarding.v1.Participant.kyc_id":
 		x.KycId = ""
 	default:
@@ -600,7 +600,7 @@ func (x *fastReflection_Participant) Get(descriptor protoreflect.FieldDescriptor
 		return protoreflect.ValueOfString(value)
 	case "cerc.onboarding.v1.Participant.role":
 		value := x.Role
-		return protoreflect.ValueOfEnum((protoreflect.EnumNumber)(value))
+		return protoreflect.ValueOfString(value)
 	case "cerc.onboarding.v1.Participant.kyc_id":
 		value := x.KycId
 		return protoreflect.ValueOfString(value)
@@ -629,7 +629,7 @@ func (x *fastReflection_Participant) Set(fd protoreflect.FieldDescriptor, value
 	case "cerc.onboarding.v1.Participant.nitro_address":
 		x.NitroAddress = value.Interface().(string)
 	case "cerc.onboarding.v1.Participant.role":
-		x.Role = (Role)(value.Enum())
+		x.Role = value.Interface().(string)
 	case "cerc.onboarding.v1.Participant.kyc_id":
 		x.KycId = value.Interface().(string)
 	default:
@@ -678,7 +678,7 @@ func (x *fastReflection_Participant) NewField(fd protoreflect.FieldDescriptor) p
 	case "cerc.onboarding.v1.Participant.nitro_address":
 		return protoreflect.ValueOfString("")
 	case "cerc.onboarding.v1.Participant.role":
-		return protoreflect.ValueOfEnum(0)
+		return protoreflect.ValueOfString("")
 	case "cerc.onboarding.v1.Participant.kyc_id":
 		return protoreflect.ValueOfString("")
 	default:
@@ -758,8 +758,9 @@ func (x *fastReflection_Participant) ProtoMethods() *protoiface.Methods {
 		if l > 0 {
 			n += 1 + l + runtime.Sov(uint64(l))
 		}
-		if x.Role != 0 {
-			n += 1 + runtime.Sov(uint64(x.Role))
+		l = len(x.Role)
+		if l > 0 {
+			n += 1 + l + runtime.Sov(uint64(l))
 		}
 		l = len(x.KycId)
 		if l > 0 {
@@ -801,10 +802,12 @@ func (x *fastReflection_Participant) ProtoMethods() *protoiface.Methods {
 			i--
 			dAtA[i] = 0x22
 		}
-		if x.Role != 0 {
-			i = runtime.EncodeVarint(dAtA, i, uint64(x.Role))
+		if len(x.Role) > 0 {
+			i -= len(x.Role)
+			copy(dAtA[i:], x.Role)
+			i = runtime.EncodeVarint(dAtA, i, uint64(len(x.Role)))
 			i--
-			dAtA[i] = 0x18
+			dAtA[i] = 0x1a
 		}
 		if len(x.NitroAddress) > 0 {
 			i -= len(x.NitroAddress)
@@ -934,10 +937,10 @@ func (x *fastReflection_Participant) ProtoMethods() *protoiface.Methods {
 				x.NitroAddress = string(dAtA[iNdEx:postIndex])
 				iNdEx = postIndex
 			case 3:
-				if wireType != 0 {
+				if wireType != 2 {
 					return protoiface.UnmarshalOutput{NoUnkeyedLiterals: input.NoUnkeyedLiterals, Flags: input.Flags}, fmt.Errorf("proto: wrong wireType = %d for field Role", wireType)
 				}
-				x.Role = 0
+				var stringLen uint64
 				for shift := uint(0); ; shift += 7 {
 					if shift >= 64 {
 						return protoiface.UnmarshalOutput{NoUnkeyedLiterals: input.NoUnkeyedLiterals, Flags: input.Flags}, runtime.ErrIntOverflow
@@ -947,11 +950,24 @@ func (x *fastReflection_Participant) ProtoMethods() *protoiface.Methods {
 					}
 					b := dAtA[iNdEx]
 					iNdEx++
-					x.Role |= Role(b&0x7F) << shift
+					stringLen |= uint64(b&0x7F) << shift
 					if b < 0x80 {
 						break
 					}
 				}
+				intStringLen := int(stringLen)
+				if intStringLen < 0 {
+					return protoiface.UnmarshalOutput{NoUnkeyedLiterals: input.NoUnkeyedLiterals, Flags: input.Flags}, runtime.ErrInvalidLength
+				}
+				postIndex := iNdEx + intStringLen
+				if postIndex < 0 {
+					return protoiface.UnmarshalOutput{NoUnkeyedLiterals: input.NoUnkeyedLiterals, Flags: input.Flags}, runtime.ErrInvalidLength
+				}
+				if postIndex > l {
+					return protoiface.UnmarshalOutput{NoUnkeyedLiterals: input.NoUnkeyedLiterals, Flags: input.Flags}, io.ErrUnexpectedEOF
+				}
+				x.Role = string(dAtA[iNdEx:postIndex])
+				iNdEx = postIndex
 			case 4:
 				if wireType != 2 {
 					return protoiface.UnmarshalOutput{NoUnkeyedLiterals: input.NoUnkeyedLiterals, Flags: input.Flags}, fmt.Errorf("proto: wrong wireType = %d for field KycId", wireType)
@@ -1516,59 +1532,6 @@ const (
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )
 
-// Participant Role
-type Role int32
-
-const (
-	// ROLE_UNSPECIFIED indicates unknown role.
-	Role_ROLE_UNSPECIFIED Role = 0
-	// ROLE_PARTICIPANT indicates the participant role.
-	Role_ROLE_PARTICIPANT Role = 1
-	// ROLE_VALIDATOR indicates user participating as a validator.
-	Role_ROLE_VALIDATOR Role = 2
-)
-
-// Enum value maps for Role.
-var (
-	Role_name = map[int32]string{
-		0: "ROLE_UNSPECIFIED",
-		1: "ROLE_PARTICIPANT",
-		2: "ROLE_VALIDATOR",
-	}
-	Role_value = map[string]int32{
-		"ROLE_UNSPECIFIED": 0,
-		"ROLE_PARTICIPANT": 1,
-		"ROLE_VALIDATOR":   2,
-	}
-)
-
-func (x Role) Enum() *Role {
-	p := new(Role)
-	*p = x
-	return p
-}
-
-func (x Role) String() string {
-	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
-}
-
-func (Role) Descriptor() protoreflect.EnumDescriptor {
-	return file_cerc_onboarding_v1_onboarding_proto_enumTypes[0].Descriptor()
-}
-
-func (Role) Type() protoreflect.EnumType {
-	return &file_cerc_onboarding_v1_onboarding_proto_enumTypes[0]
-}
-
-func (x Role) Number() protoreflect.EnumNumber {
-	return protoreflect.EnumNumber(x)
-}
-
-// Deprecated: Use Role.Descriptor instead.
-func (Role) EnumDescriptor() ([]byte, []int) {
-	return file_cerc_onboarding_v1_onboarding_proto_rawDescGZIP(), []int{0}
-}
-
 // Params defines the parameters of the onboarding module.
 type Params struct {
 	state         protoimpl.MessageState
@@ -1617,7 +1580,7 @@ type Participant struct {
 	// participant's Nitro address
 	NitroAddress string `protobuf:"bytes,2,opt,name=nitro_address,json=nitroAddress,proto3" json:"nitro_address,omitempty"`
 	// participant's role (participant | validator)
-	Role Role `protobuf:"varint,3,opt,name=role,proto3,enum=cerc.onboarding.v1.Role" json:"role,omitempty"`
+	Role string `protobuf:"bytes,3,opt,name=role,proto3" json:"role,omitempty"`
 	// participant's KYC receipt ID
 	KycId string `protobuf:"bytes,4,opt,name=kyc_id,json=kycId,proto3" json:"kyc_id,omitempty"`
 }
@@ -1656,11 +1619,11 @@ func (x *Participant) GetNitroAddress() string {
 	return ""
 }
 
-func (x *Participant) GetRole() Role {
+func (x *Participant) GetRole() string {
 	if x != nil {
 		return x.Role
 	}
-	return Role_ROLE_UNSPECIFIED
+	return ""
 }
 
 func (x *Participant) GetKycId() string {
@@ -1729,7 +1692,7 @@ var file_cerc_onboarding_v1_onboarding_proto_rawDesc = []byte{
 	0x6c, 0x65, 0x64, 0x22, 0x20, 0x79, 0x61, 0x6d, 0x6c, 0x3a, 0x22, 0x6f, 0x6e, 0x62, 0x6f, 0x61,
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@@ -1740,42 +1703,35 @@ var file_cerc_onboarding_v1_onboarding_proto_rawDesc = []byte{
 	0x42, 0x2d, 0xf2, 0xde, 0x1f, 0x29, 0x6a, 0x73, 0x6f, 0x6e, 0x3a, 0x22, 0x6e, 0x69, 0x74, 0x72,
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+	0x67, 0x3a, 0x3a, 0x56, 0x31, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -1790,21 +1746,18 @@ func file_cerc_onboarding_v1_onboarding_proto_rawDescGZIP() []byte {
 	return file_cerc_onboarding_v1_onboarding_proto_rawDescData
 }
 
-var file_cerc_onboarding_v1_onboarding_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
 var file_cerc_onboarding_v1_onboarding_proto_msgTypes = make([]protoimpl.MessageInfo, 3)
 var file_cerc_onboarding_v1_onboarding_proto_goTypes = []interface{}{
-	(Role)(0),           // 0: cerc.onboarding.v1.Role
-	(*Params)(nil),      // 1: cerc.onboarding.v1.Params
-	(*Participant)(nil), // 2: cerc.onboarding.v1.Participant
-	(*EthPayload)(nil),  // 3: cerc.onboarding.v1.EthPayload
+	(*Params)(nil),      // 0: cerc.onboarding.v1.Params
+	(*Participant)(nil), // 1: cerc.onboarding.v1.Participant
+	(*EthPayload)(nil),  // 2: cerc.onboarding.v1.EthPayload
 }
 var file_cerc_onboarding_v1_onboarding_proto_depIdxs = []int32{
-	0, // 0: cerc.onboarding.v1.Participant.role:type_name -> cerc.onboarding.v1.Role
-	1, // [1:1] is the sub-list for method output_type
-	1, // [1:1] is the sub-list for method input_type
-	1, // [1:1] is the sub-list for extension type_name
-	1, // [1:1] is the sub-list for extension extendee
-	0, // [0:1] is the sub-list for field type_name
+	0, // [0:0] is the sub-list for method output_type
+	0, // [0:0] is the sub-list for method input_type
+	0, // [0:0] is the sub-list for extension type_name
+	0, // [0:0] is the sub-list for extension extendee
+	0, // [0:0] is the sub-list for field type_name
 }
 
 func init() { file_cerc_onboarding_v1_onboarding_proto_init() }
@@ -1855,14 +1808,13 @@ func file_cerc_onboarding_v1_onboarding_proto_init() {
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_cerc_onboarding_v1_onboarding_proto_rawDesc,
-			NumEnums:      1,
+			NumEnums:      0,
 			NumMessages:   3,
 			NumExtensions: 0,
 			NumServices:   0,
 		},
 		GoTypes:           file_cerc_onboarding_v1_onboarding_proto_goTypes,
 		DependencyIndexes: file_cerc_onboarding_v1_onboarding_proto_depIdxs,
-		EnumInfos:         file_cerc_onboarding_v1_onboarding_proto_enumTypes,
 		MessageInfos:      file_cerc_onboarding_v1_onboarding_proto_msgTypes,
 	}.Build()
 	File_cerc_onboarding_v1_onboarding_proto = out.File
diff --git a/api/cerc/onboarding/v1/tx.pulsar.go b/api/cerc/onboarding/v1/tx.pulsar.go
index aff1ff44..e35da0f5 100644
--- a/api/cerc/onboarding/v1/tx.pulsar.go
+++ b/api/cerc/onboarding/v1/tx.pulsar.go
@@ -117,8 +117,8 @@ func (x *fastReflection_MsgOnboardParticipant) Range(f func(protoreflect.FieldDe
 			return
 		}
 	}
-	if x.Role != 0 {
-		value := protoreflect.ValueOfEnum((protoreflect.EnumNumber)(x.Role))
+	if x.Role != "" {
+		value := protoreflect.ValueOfString(x.Role)
 		if !f(fd_MsgOnboardParticipant_role, value) {
 			return
 		}
@@ -151,7 +151,7 @@ func (x *fastReflection_MsgOnboardParticipant) Has(fd protoreflect.FieldDescript
 	case "cerc.onboarding.v1.MsgOnboardParticipant.eth_signature":
 		return x.EthSignature != ""
 	case "cerc.onboarding.v1.MsgOnboardParticipant.role":
-		return x.Role != 0
+		return x.Role != ""
 	case "cerc.onboarding.v1.MsgOnboardParticipant.kyc_id":
 		return x.KycId != ""
 	default:
@@ -177,7 +177,7 @@ func (x *fastReflection_MsgOnboardParticipant) Clear(fd protoreflect.FieldDescri
 	case "cerc.onboarding.v1.MsgOnboardParticipant.eth_signature":
 		x.EthSignature = ""
 	case "cerc.onboarding.v1.MsgOnboardParticipant.role":
-		x.Role = 0
+		x.Role = ""
 	case "cerc.onboarding.v1.MsgOnboardParticipant.kyc_id":
 		x.KycId = ""
 	default:
@@ -207,7 +207,7 @@ func (x *fastReflection_MsgOnboardParticipant) Get(descriptor protoreflect.Field
 		return protoreflect.ValueOfString(value)
 	case "cerc.onboarding.v1.MsgOnboardParticipant.role":
 		value := x.Role
-		return protoreflect.ValueOfEnum((protoreflect.EnumNumber)(value))
+		return protoreflect.ValueOfString(value)
 	case "cerc.onboarding.v1.MsgOnboardParticipant.kyc_id":
 		value := x.KycId
 		return protoreflect.ValueOfString(value)
@@ -238,7 +238,7 @@ func (x *fastReflection_MsgOnboardParticipant) Set(fd protoreflect.FieldDescript
 	case "cerc.onboarding.v1.MsgOnboardParticipant.eth_signature":
 		x.EthSignature = value.Interface().(string)
 	case "cerc.onboarding.v1.MsgOnboardParticipant.role":
-		x.Role = (Role)(value.Enum())
+		x.Role = value.Interface().(string)
 	case "cerc.onboarding.v1.MsgOnboardParticipant.kyc_id":
 		x.KycId = value.Interface().(string)
 	default:
@@ -295,7 +295,7 @@ func (x *fastReflection_MsgOnboardParticipant) NewField(fd protoreflect.FieldDes
 	case "cerc.onboarding.v1.MsgOnboardParticipant.eth_signature":
 		return protoreflect.ValueOfString("")
 	case "cerc.onboarding.v1.MsgOnboardParticipant.role":
-		return protoreflect.ValueOfEnum(0)
+		return protoreflect.ValueOfString("")
 	case "cerc.onboarding.v1.MsgOnboardParticipant.kyc_id":
 		return protoreflect.ValueOfString("")
 	default:
@@ -379,8 +379,9 @@ func (x *fastReflection_MsgOnboardParticipant) ProtoMethods() *protoiface.Method
 		if l > 0 {
 			n += 1 + l + runtime.Sov(uint64(l))
 		}
-		if x.Role != 0 {
-			n += 1 + runtime.Sov(uint64(x.Role))
+		l = len(x.Role)
+		if l > 0 {
+			n += 1 + l + runtime.Sov(uint64(l))
 		}
 		l = len(x.KycId)
 		if l > 0 {
@@ -422,10 +423,12 @@ func (x *fastReflection_MsgOnboardParticipant) ProtoMethods() *protoiface.Method
 			i--
 			dAtA[i] = 0x2a
 		}
-		if x.Role != 0 {
-			i = runtime.EncodeVarint(dAtA, i, uint64(x.Role))
+		if len(x.Role) > 0 {
+			i -= len(x.Role)
+			copy(dAtA[i:], x.Role)
+			i = runtime.EncodeVarint(dAtA, i, uint64(len(x.Role)))
 			i--
-			dAtA[i] = 0x20
+			dAtA[i] = 0x22
 		}
 		if len(x.EthSignature) > 0 {
 			i -= len(x.EthSignature)
@@ -605,10 +608,10 @@ func (x *fastReflection_MsgOnboardParticipant) ProtoMethods() *protoiface.Method
 				x.EthSignature = string(dAtA[iNdEx:postIndex])
 				iNdEx = postIndex
 			case 4:
-				if wireType != 0 {
+				if wireType != 2 {
 					return protoiface.UnmarshalOutput{NoUnkeyedLiterals: input.NoUnkeyedLiterals, Flags: input.Flags}, fmt.Errorf("proto: wrong wireType = %d for field Role", wireType)
 				}
-				x.Role = 0
+				var stringLen uint64
 				for shift := uint(0); ; shift += 7 {
 					if shift >= 64 {
 						return protoiface.UnmarshalOutput{NoUnkeyedLiterals: input.NoUnkeyedLiterals, Flags: input.Flags}, runtime.ErrIntOverflow
@@ -618,11 +621,24 @@ func (x *fastReflection_MsgOnboardParticipant) ProtoMethods() *protoiface.Method
 					}
 					b := dAtA[iNdEx]
 					iNdEx++
-					x.Role |= Role(b&0x7F) << shift
+					stringLen |= uint64(b&0x7F) << shift
 					if b < 0x80 {
 						break
 					}
 				}
+				intStringLen := int(stringLen)
+				if intStringLen < 0 {
+					return protoiface.UnmarshalOutput{NoUnkeyedLiterals: input.NoUnkeyedLiterals, Flags: input.Flags}, runtime.ErrInvalidLength
+				}
+				postIndex := iNdEx + intStringLen
+				if postIndex < 0 {
+					return protoiface.UnmarshalOutput{NoUnkeyedLiterals: input.NoUnkeyedLiterals, Flags: input.Flags}, runtime.ErrInvalidLength
+				}
+				if postIndex > l {
+					return protoiface.UnmarshalOutput{NoUnkeyedLiterals: input.NoUnkeyedLiterals, Flags: input.Flags}, io.ErrUnexpectedEOF
+				}
+				x.Role = string(dAtA[iNdEx:postIndex])
+				iNdEx = postIndex
 			case 5:
 				if wireType != 2 {
 					return protoiface.UnmarshalOutput{NoUnkeyedLiterals: input.NoUnkeyedLiterals, Flags: input.Flags}, fmt.Errorf("proto: wrong wireType = %d for field KycId", wireType)
@@ -1069,7 +1085,7 @@ type MsgOnboardParticipant struct {
 	Participant  string      `protobuf:"bytes,1,opt,name=participant,proto3" json:"participant,omitempty"`
 	EthPayload   *EthPayload `protobuf:"bytes,2,opt,name=eth_payload,json=ethPayload,proto3" json:"eth_payload,omitempty"`
 	EthSignature string      `protobuf:"bytes,3,opt,name=eth_signature,json=ethSignature,proto3" json:"eth_signature,omitempty"`
-	Role         Role        `protobuf:"varint,4,opt,name=role,proto3,enum=cerc.onboarding.v1.Role" json:"role,omitempty"`
+	Role         string      `protobuf:"bytes,4,opt,name=role,proto3" json:"role,omitempty"`
 	KycId        string      `protobuf:"bytes,5,opt,name=kyc_id,json=kycId,proto3" json:"kyc_id,omitempty"`
 }
 
@@ -1114,11 +1130,11 @@ func (x *MsgOnboardParticipant) GetEthSignature() string {
 	return ""
 }
 
-func (x *MsgOnboardParticipant) GetRole() Role {
+func (x *MsgOnboardParticipant) GetRole() string {
 	if x != nil {
 		return x.Role
 	}
-	return Role_ROLE_UNSPECIFIED
+	return ""
 }
 
 func (x *MsgOnboardParticipant) GetKycId() string {
@@ -1169,7 +1185,7 @@ var file_cerc_onboarding_v1_tx_proto_rawDesc = []byte{
 	0x6f, 0x74, 0x6f, 0x2f, 0x67, 0x6f, 0x67, 0x6f, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x1a, 0x23,
 	0x63, 0x65, 0x72, 0x63, 0x2f, 0x6f, 0x6e, 0x62, 0x6f, 0x61, 0x72, 0x64, 0x69, 0x6e, 0x67, 0x2f,
 	0x76, 0x31, 0x2f, 0x6f, 0x6e, 0x62, 0x6f, 0x61, 0x72, 0x64, 0x69, 0x6e, 0x67, 0x2e, 0x70, 0x72,
-	0x6f, 0x74, 0x6f, 0x22, 0xfc, 0x01, 0x0a, 0x15, 0x4d, 0x73, 0x67, 0x4f, 0x6e, 0x62, 0x6f, 0x61,
+	0x6f, 0x74, 0x6f, 0x22, 0xe2, 0x01, 0x0a, 0x15, 0x4d, 0x73, 0x67, 0x4f, 0x6e, 0x62, 0x6f, 0x61,
 	0x72, 0x64, 0x50, 0x61, 0x72, 0x74, 0x69, 0x63, 0x69, 0x70, 0x61, 0x6e, 0x74, 0x12, 0x20, 0x0a,
 	0x0b, 0x70, 0x61, 0x72, 0x74, 0x69, 0x63, 0x69, 0x70, 0x61, 0x6e, 0x74, 0x18, 0x01, 0x20, 0x01,
 	0x28, 0x09, 0x52, 0x0b, 0x70, 0x61, 0x72, 0x74, 0x69, 0x63, 0x69, 0x70, 0x61, 0x6e, 0x74, 0x12,
@@ -1179,39 +1195,38 @@ var file_cerc_onboarding_v1_tx_proto_rawDesc = []byte{
 	0x6c, 0x6f, 0x61, 0x64, 0x42, 0x04, 0xc8, 0xde, 0x1f, 0x00, 0x52, 0x0a, 0x65, 0x74, 0x68, 0x50,
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+	0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -1231,18 +1246,16 @@ var file_cerc_onboarding_v1_tx_proto_goTypes = []interface{}{
 	(*MsgOnboardParticipant)(nil),         // 0: cerc.onboarding.v1.MsgOnboardParticipant
 	(*MsgOnboardParticipantResponse)(nil), // 1: cerc.onboarding.v1.MsgOnboardParticipantResponse
 	(*EthPayload)(nil),                    // 2: cerc.onboarding.v1.EthPayload
-	(Role)(0),                             // 3: cerc.onboarding.v1.Role
 }
 var file_cerc_onboarding_v1_tx_proto_depIdxs = []int32{
 	2, // 0: cerc.onboarding.v1.MsgOnboardParticipant.eth_payload:type_name -> cerc.onboarding.v1.EthPayload
-	3, // 1: cerc.onboarding.v1.MsgOnboardParticipant.role:type_name -> cerc.onboarding.v1.Role
-	0, // 2: cerc.onboarding.v1.Msg.OnboardParticipant:input_type -> cerc.onboarding.v1.MsgOnboardParticipant
-	1, // 3: cerc.onboarding.v1.Msg.OnboardParticipant:output_type -> cerc.onboarding.v1.MsgOnboardParticipantResponse
-	3, // [3:4] is the sub-list for method output_type
-	2, // [2:3] is the sub-list for method input_type
-	2, // [2:2] is the sub-list for extension type_name
-	2, // [2:2] is the sub-list for extension extendee
-	0, // [0:2] is the sub-list for field type_name
+	0, // 1: cerc.onboarding.v1.Msg.OnboardParticipant:input_type -> cerc.onboarding.v1.MsgOnboardParticipant
+	1, // 2: cerc.onboarding.v1.Msg.OnboardParticipant:output_type -> cerc.onboarding.v1.MsgOnboardParticipantResponse
+	2, // [2:3] is the sub-list for method output_type
+	1, // [1:2] is the sub-list for method input_type
+	1, // [1:1] is the sub-list for extension type_name
+	1, // [1:1] is the sub-list for extension extendee
+	0, // [0:1] is the sub-list for field type_name
 }
 
 func init() { file_cerc_onboarding_v1_tx_proto_init() }
diff --git a/gql/cerc-io/laconicd/schema.graphql b/gql/cerc-io/laconicd/schema.graphql
index 0e132745..483dcd1d 100644
--- a/gql/cerc-io/laconicd/schema.graphql
+++ b/gql/cerc-io/laconicd/schema.graphql
@@ -33,7 +33,7 @@ type Account {
 type Participant {
   cosmosAddress: String! # Cosmos address of the participant who will be registered.
   nitroAddress: String! # Nitro addresss of the participant who will be registered.
-  role: Int! # Participant's role
+  role: String! # Participant's role
   kycId: String! # Participant's KYC receipt ID
 }
 
diff --git a/gql/generated.go b/gql/generated.go
index bc9f5a20..74dbbe8d 100644
--- a/gql/generated.go
+++ b/gql/generated.go
@@ -3966,9 +3966,9 @@ func (ec *executionContext) _Participant_role(ctx context.Context, field graphql
 		}
 		return graphql.Null
 	}
-	res := resTmp.(int)
+	res := resTmp.(string)
 	fc.Result = res
-	return ec.marshalNInt2int(ctx, field.Selections, res)
+	return ec.marshalNString2string(ctx, field.Selections, res)
 }
 
 func (ec *executionContext) fieldContext_Participant_role(ctx context.Context, field graphql.CollectedField) (fc *graphql.FieldContext, err error) {
@@ -3978,7 +3978,7 @@ func (ec *executionContext) fieldContext_Participant_role(ctx context.Context, f
 		IsMethod:   false,
 		IsResolver: false,
 		Child: func(ctx context.Context, field graphql.CollectedField) (*graphql.FieldContext, error) {
-			return nil, errors.New("field of type Int does not have child fields")
+			return nil, errors.New("field of type String does not have child fields")
 		},
 	}
 	return fc, nil
diff --git a/gql/models_gen.go b/gql/models_gen.go
index aedaedfd..460e8233 100644
--- a/gql/models_gen.go
+++ b/gql/models_gen.go
@@ -138,7 +138,7 @@ type OwnerBonds struct {
 type Participant struct {
 	CosmosAddress string `json:"cosmosAddress"`
 	NitroAddress  string `json:"nitroAddress"`
-	Role          int    `json:"role"`
+	Role          string `json:"role"`
 	KycID         string `json:"kycId"`
 }
 
diff --git a/gql/resolver.go b/gql/resolver.go
index b5c264ef..ef77e002 100644
--- a/gql/resolver.go
+++ b/gql/resolver.go
@@ -373,7 +373,7 @@ func (q queryResolver) GetParticipants(ctx context.Context) ([]*Participant, err
 		participants[i] = &Participant{
 			CosmosAddress: p.CosmosAddress,
 			NitroAddress:  p.NitroAddress,
-			Role:          int(p.GetRole()),
+			Role:          p.Role,
 			KycID:         p.KycId,
 		}
 	}
diff --git a/proto/cerc/onboarding/v1/onboarding.proto b/proto/cerc/onboarding/v1/onboarding.proto
index 494ab0c7..002dc6ae 100644
--- a/proto/cerc/onboarding/v1/onboarding.proto
+++ b/proto/cerc/onboarding/v1/onboarding.proto
@@ -27,7 +27,7 @@ message Participant {
             "json:\"nitro_address\" yaml:\"nitro_address\"" ];
 
   // participant's role (participant | validator)
-  Role role = 3 [ (gogoproto.moretags) = "json:\"role\" yaml:\"role\"" ];
+  string role = 3 [ (gogoproto.moretags) = "json:\"role\" yaml:\"role\"" ];
 
   // participant's KYC receipt ID
   string kyc_id = 4
@@ -41,17 +41,3 @@ message EthPayload {
 
   string msg = 2 [ (gogoproto.moretags) = "json:\"msg\" yaml:\"msg\"" ];
 }
-
-// Participant Role
-enum Role {
-  option (gogoproto.goproto_enum_prefix) = false;
-
-  // ROLE_UNSPECIFIED indicates unknown role.
-  ROLE_UNSPECIFIED = 0;
-
-  // ROLE_PARTICIPANT indicates the participant role.
-  ROLE_PARTICIPANT = 1;
-
-  // ROLE_VALIDATOR indicates user participating as a validator.
-  ROLE_VALIDATOR = 2;
-}
diff --git a/proto/cerc/onboarding/v1/tx.proto b/proto/cerc/onboarding/v1/tx.proto
index c0e7b6d7..6e0eab6e 100644
--- a/proto/cerc/onboarding/v1/tx.proto
+++ b/proto/cerc/onboarding/v1/tx.proto
@@ -28,7 +28,7 @@ message MsgOnboardParticipant {
   string participant = 1;
   EthPayload eth_payload = 2 [ (gogoproto.nullable) = false ];
   string eth_signature = 3;
-  Role role = 4;
+  string role = 4;
   string kyc_id = 5;
 }
 
diff --git a/x/onboarding/msgs.go b/x/onboarding/msgs.go
index 75574f4a..c9f5a8c2 100644
--- a/x/onboarding/msgs.go
+++ b/x/onboarding/msgs.go
@@ -1,11 +1,15 @@
 package onboarding
 
 import (
+	"fmt"
+
 	errorsmod "cosmossdk.io/errors"
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
 )
 
+var PERMITTED_ROLES = []string{"participant", "validator"}
+
 var _ sdk.Msg = &MsgOnboardParticipant{}
 
 func (msg MsgOnboardParticipant) ValidateBasic() error {
@@ -21,13 +25,21 @@ func (msg MsgOnboardParticipant) ValidateBasic() error {
 		return errorsmod.Wrap(sdkerrors.ErrInvalidRequest, "Invalid signature.")
 	}
 
-	if msg.Role == ROLE_UNSPECIFIED {
-		return errorsmod.Wrap(sdkerrors.ErrInvalidRequest, "Participant role not specified.")
-	}
-
 	if len(msg.KycId) == 0 {
 		return errorsmod.Wrap(sdkerrors.ErrInvalidRequest, "Empty KYC ID.")
 	}
 
+	isRoleValid := false
+	for _, v := range PERMITTED_ROLES {
+		if msg.Role == v {
+			isRoleValid = true
+			break
+		}
+	}
+
+	if !isRoleValid {
+		return errorsmod.Wrap(sdkerrors.ErrInvalidRequest, fmt.Sprintf("Participant role has to be one of: %v", PERMITTED_ROLES))
+	}
+
 	return nil
 }
diff --git a/x/onboarding/onboarding.pb.go b/x/onboarding/onboarding.pb.go
index f429f30c..da16f232 100644
--- a/x/onboarding/onboarding.pb.go
+++ b/x/onboarding/onboarding.pb.go
@@ -23,38 +23,6 @@ var _ = math.Inf
 // proto package needs to be updated.
 const _ = proto.GoGoProtoPackageIsVersion3 // please upgrade the proto package
 
-// Participant Role
-type Role int32
-
-const (
-	// ROLE_UNSPECIFIED indicates unknown role.
-	ROLE_UNSPECIFIED Role = 0
-	// ROLE_PARTICIPANT indicates the participant role.
-	ROLE_PARTICIPANT Role = 1
-	// ROLE_VALIDATOR indicates user participating as a validator.
-	ROLE_VALIDATOR Role = 2
-)
-
-var Role_name = map[int32]string{
-	0: "ROLE_UNSPECIFIED",
-	1: "ROLE_PARTICIPANT",
-	2: "ROLE_VALIDATOR",
-}
-
-var Role_value = map[string]int32{
-	"ROLE_UNSPECIFIED": 0,
-	"ROLE_PARTICIPANT": 1,
-	"ROLE_VALIDATOR":   2,
-}
-
-func (x Role) String() string {
-	return proto.EnumName(Role_name, int32(x))
-}
-
-func (Role) EnumDescriptor() ([]byte, []int) {
-	return fileDescriptor_59afed779274eaf0, []int{0}
-}
-
 // Params defines the parameters of the onboarding module.
 type Params struct {
 	OnboardingEnabled bool `protobuf:"varint,1,opt,name=onboarding_enabled,json=onboardingEnabled,proto3" json:"onboarding_enabled,omitempty" json:"onboarding_enabled" yaml:"onboarding_enabled"`
@@ -108,7 +76,7 @@ type Participant struct {
 	// participant's Nitro address
 	NitroAddress string `protobuf:"bytes,2,opt,name=nitro_address,json=nitroAddress,proto3" json:"nitro_address,omitempty" json:"nitro_address" yaml:"nitro_address"`
 	// participant's role (participant | validator)
-	Role Role `protobuf:"varint,3,opt,name=role,proto3,enum=cerc.onboarding.v1.Role" json:"role,omitempty" json:"role" yaml:"role"`
+	Role string `protobuf:"bytes,3,opt,name=role,proto3" json:"role,omitempty" json:"role" yaml:"role"`
 	// participant's KYC receipt ID
 	KycId string `protobuf:"bytes,4,opt,name=kyc_id,json=kycId,proto3" json:"kyc_id,omitempty" json:"kyc_id" yaml:"kyc_id"`
 }
@@ -160,11 +128,11 @@ func (m *Participant) GetNitroAddress() string {
 	return ""
 }
 
-func (m *Participant) GetRole() Role {
+func (m *Participant) GetRole() string {
 	if m != nil {
 		return m.Role
 	}
-	return ROLE_UNSPECIFIED
+	return ""
 }
 
 func (m *Participant) GetKycId() string {
@@ -228,7 +196,6 @@ func (m *EthPayload) GetMsg() string {
 }
 
 func init() {
-	proto.RegisterEnum("cerc.onboarding.v1.Role", Role_name, Role_value)
 	proto.RegisterType((*Params)(nil), "cerc.onboarding.v1.Params")
 	proto.RegisterType((*Participant)(nil), "cerc.onboarding.v1.Participant")
 	proto.RegisterType((*EthPayload)(nil), "cerc.onboarding.v1.EthPayload")
@@ -239,37 +206,32 @@ func init() {
 }
 
 var fileDescriptor_59afed779274eaf0 = []byte{
-	// 479 bytes of a gzipped FileDescriptorProto
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-	0xa3, 0xff, 0x01, 0x00, 0x00, 0xff, 0xff, 0xc8, 0xaf, 0x40, 0xe4, 0x12, 0x03, 0x00, 0x00,
+	// 399 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x6c, 0x92, 0xc1, 0xce, 0xd2, 0x40,
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+	0xd3, 0xe6, 0x82, 0xd7, 0x34, 0x94, 0x14, 0x8b, 0x34, 0x10, 0x44, 0x32, 0x9e, 0x46, 0x38, 0x9f,
+	0x5f, 0x74, 0xee, 0x56, 0x8a, 0x4c, 0x40, 0x58, 0x9b, 0xdc, 0x0b, 0x39, 0x9f, 0xbf, 0x78, 0x12,
+	0x89, 0x48, 0xe8, 0x31, 0xae, 0x2b, 0xe3, 0x74, 0xb6, 0xa0, 0xbf, 0x22, 0x92, 0x24, 0x0a, 0x7e,
+	0x05, 0xf0, 0x1c, 0x58, 0x87, 0x29, 0x09, 0xe2, 0x90, 0x0d, 0xad, 0xb1, 0x35, 0xb9, 0xe7, 0xbd,
+	0xab, 0x4a, 0xb4, 0xf8, 0xae, 0x44, 0xfa, 0xde, 0xf9, 0xdf, 0xe3, 0x8c, 0x0b, 0x92, 0xc4, 0xb7,
+	0x4e, 0xfc, 0xc7, 0x67, 0x71, 0x79, 0xd4, 0x7e, 0xdd, 0x80, 0x07, 0x2b, 0x22, 0x33, 0x4e, 0xf9,
+	0x96, 0xa4, 0x19, 0xfc, 0x0c, 0x1e, 0x51, 0xa1, 0x12, 0xa1, 0xd6, 0x84, 0x31, 0x19, 0x2a, 0xa5,
+	0x77, 0xde, 0xf7, 0x70, 0x55, 0xa2, 0xa9, 0xd9, 0xd9, 0x9e, 0x37, 0xfb, 0xae, 0x54, 0x7f, 0x60,
+	0x84, 0x8f, 0xa6, 0x87, 0x3e, 0x18, 0xa4, 0x3c, 0x93, 0xe2, 0x84, 0xbd, 0xd1, 0xd8, 0x59, 0x55,
+	0xa2, 0x37, 0x06, 0xdb, 0x1a, 0x37, 0xd4, 0xb6, 0xe8, 0x3f, 0xd4, 0x7d, 0xc3, 0xc4, 0xa0, 0x27,
+	0x45, 0x1c, 0x0e, 0xbb, 0x1a, 0x35, 0xaa, 0x4a, 0xf4, 0xcc, 0xa0, 0x6a, 0xb5, 0x21, 0xe8, 0xda,
+	0xd7, 0x46, 0xf8, 0x16, 0xf4, 0x37, 0x05, 0x5d, 0x73, 0x36, 0xec, 0xe9, 0x08, 0xaa, 0x4a, 0x34,
+	0x32, 0x11, 0xa3, 0x37, 0xa1, 0x63, 0xe7, 0xdf, 0xd9, 0x14, 0xf4, 0x13, 0x73, 0x72, 0x00, 0x96,
+	0xd9, 0xb7, 0x15, 0x29, 0x62, 0x41, 0x18, 0xfc, 0x00, 0xee, 0xb6, 0xff, 0xcd, 0xab, 0xaa, 0x44,
+	0x2f, 0x0d, 0xe6, 0xea, 0xf9, 0xa7, 0x87, 0x37, 0x09, 0x38, 0x05, 0xdd, 0x44, 0x45, 0xc7, 0xaf,
+	0x7f, 0x5e, 0x95, 0xe8, 0xa9, 0x09, 0x26, 0x2a, 0x6a, 0x42, 0x75, 0xe9, 0xd7, 0x2e, 0xcf, 0xfb,
+	0xbd, 0xb7, 0xad, 0xdd, 0xde, 0xb6, 0xfe, 0xee, 0x6d, 0xeb, 0xe7, 0xc1, 0xee, 0xec, 0x0e, 0x76,
+	0xe7, 0xcf, 0xc1, 0xee, 0x7c, 0x99, 0x44, 0x3c, 0x73, 0x73, 0x16, 0xb8, 0x99, 0xc0, 0xf5, 0x75,
+	0xcd, 0xb8, 0xc0, 0x31, 0xa1, 0x22, 0xe5, 0x94, 0xe1, 0x1f, 0x17, 0x27, 0x18, 0xf4, 0xf5, 0x65,
+	0x2d, 0xfe, 0x05, 0x00, 0x00, 0xff, 0xff, 0x87, 0xe5, 0xd5, 0x6b, 0xaa, 0x02, 0x00, 0x00,
 }
 
 func (m *Params) Marshal() (dAtA []byte, err error) {
@@ -332,10 +294,12 @@ func (m *Participant) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 		i--
 		dAtA[i] = 0x22
 	}
-	if m.Role != 0 {
-		i = encodeVarintOnboarding(dAtA, i, uint64(m.Role))
+	if len(m.Role) > 0 {
+		i -= len(m.Role)
+		copy(dAtA[i:], m.Role)
+		i = encodeVarintOnboarding(dAtA, i, uint64(len(m.Role)))
 		i--
-		dAtA[i] = 0x18
+		dAtA[i] = 0x1a
 	}
 	if len(m.NitroAddress) > 0 {
 		i -= len(m.NitroAddress)
@@ -428,8 +392,9 @@ func (m *Participant) Size() (n int) {
 	if l > 0 {
 		n += 1 + l + sovOnboarding(uint64(l))
 	}
-	if m.Role != 0 {
-		n += 1 + sovOnboarding(uint64(m.Role))
+	l = len(m.Role)
+	if l > 0 {
+		n += 1 + l + sovOnboarding(uint64(l))
 	}
 	l = len(m.KycId)
 	if l > 0 {
@@ -625,10 +590,10 @@ func (m *Participant) Unmarshal(dAtA []byte) error {
 			m.NitroAddress = string(dAtA[iNdEx:postIndex])
 			iNdEx = postIndex
 		case 3:
-			if wireType != 0 {
+			if wireType != 2 {
 				return fmt.Errorf("proto: wrong wireType = %d for field Role", wireType)
 			}
-			m.Role = 0
+			var stringLen uint64
 			for shift := uint(0); ; shift += 7 {
 				if shift >= 64 {
 					return ErrIntOverflowOnboarding
@@ -638,11 +603,24 @@ func (m *Participant) Unmarshal(dAtA []byte) error {
 				}
 				b := dAtA[iNdEx]
 				iNdEx++
-				m.Role |= Role(b&0x7F) << shift
+				stringLen |= uint64(b&0x7F) << shift
 				if b < 0x80 {
 					break
 				}
 			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthOnboarding
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthOnboarding
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.Role = string(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
 		case 4:
 			if wireType != 2 {
 				return fmt.Errorf("proto: wrong wireType = %d for field KycId", wireType)
diff --git a/x/onboarding/tx.pb.go b/x/onboarding/tx.pb.go
index fe1ff267..8c2f3d20 100644
--- a/x/onboarding/tx.pb.go
+++ b/x/onboarding/tx.pb.go
@@ -36,7 +36,7 @@ type MsgOnboardParticipant struct {
 	Participant  string     `protobuf:"bytes,1,opt,name=participant,proto3" json:"participant,omitempty"`
 	EthPayload   EthPayload `protobuf:"bytes,2,opt,name=eth_payload,json=ethPayload,proto3" json:"eth_payload"`
 	EthSignature string     `protobuf:"bytes,3,opt,name=eth_signature,json=ethSignature,proto3" json:"eth_signature,omitempty"`
-	Role         Role       `protobuf:"varint,4,opt,name=role,proto3,enum=cerc.onboarding.v1.Role" json:"role,omitempty"`
+	Role         string     `protobuf:"bytes,4,opt,name=role,proto3" json:"role,omitempty"`
 	KycId        string     `protobuf:"bytes,5,opt,name=kyc_id,json=kycId,proto3" json:"kyc_id,omitempty"`
 }
 
@@ -94,11 +94,11 @@ func (m *MsgOnboardParticipant) GetEthSignature() string {
 	return ""
 }
 
-func (m *MsgOnboardParticipant) GetRole() Role {
+func (m *MsgOnboardParticipant) GetRole() string {
 	if m != nil {
 		return m.Role
 	}
-	return ROLE_UNSPECIFIED
+	return ""
 }
 
 func (m *MsgOnboardParticipant) GetKycId() string {
@@ -154,33 +154,33 @@ func init() {
 func init() { proto.RegisterFile("cerc/onboarding/v1/tx.proto", fileDescriptor_6bfde34a550e231e) }
 
 var fileDescriptor_6bfde34a550e231e = []byte{
-	// 414 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x8c, 0x92, 0xc1, 0x8a, 0xd3, 0x40,
-	0x1c, 0xc6, 0x33, 0xbb, 0xed, 0x82, 0x53, 0x15, 0x19, 0x5c, 0x0c, 0x51, 0xb3, 0x21, 0x7b, 0x30,
-	0xbb, 0x68, 0x86, 0xd6, 0x9b, 0xc7, 0xc2, 0x1e, 0x3c, 0x2c, 0x2e, 0xf1, 0xe6, 0xa5, 0x4c, 0x27,
-	0xc3, 0x74, 0xd8, 0x74, 0xfe, 0x21, 0x33, 0x96, 0xed, 0x4d, 0xf6, 0x09, 0x04, 0x1f, 0xc1, 0x17,
-	0x58, 0x7c, 0x8a, 0x3d, 0x16, 0xbc, 0x78, 0x12, 0x69, 0x85, 0xbe, 0x84, 0x07, 0xe9, 0xb4, 0xb5,
-	0x01, 0x23, 0x78, 0xfb, 0xe7, 0xfb, 0x7f, 0x7c, 0xbf, 0x7c, 0x33, 0x83, 0x1f, 0x73, 0x51, 0x71,
-	0x0a, 0x7a, 0x08, 0xac, 0xca, 0x95, 0x96, 0x74, 0xd2, 0xa5, 0xf6, 0x2a, 0x2d, 0x2b, 0xb0, 0x40,
-	0xc8, 0x6a, 0x99, 0xee, 0x96, 0xe9, 0xa4, 0x1b, 0x3c, 0xe2, 0x60, 0xc6, 0x60, 0xe8, 0xd8, 0x38,
-	0xef, 0xd8, 0xc8, 0xb5, 0x39, 0x78, 0x22, 0x01, 0x64, 0x21, 0x28, 0x2b, 0x15, 0x65, 0x5a, 0x83,
-	0x65, 0x56, 0x81, 0x36, 0x9b, 0xed, 0x43, 0x09, 0x12, 0xdc, 0x48, 0x57, 0xd3, 0x46, 0x3d, 0x6e,
-	0xa0, 0xd7, 0x70, 0xce, 0x14, 0xff, 0x42, 0xf8, 0xf0, 0xdc, 0xc8, 0x37, 0x6b, 0xfd, 0x82, 0x55,
-	0x56, 0x71, 0x55, 0x32, 0x6d, 0x49, 0x84, 0x3b, 0xe5, 0xee, 0xd3, 0x47, 0x11, 0x4a, 0xee, 0x64,
-	0x75, 0x89, 0x9c, 0xe1, 0x8e, 0xb0, 0xa3, 0x41, 0xc9, 0xa6, 0x05, 0xb0, 0xdc, 0xdf, 0x8b, 0x50,
-	0xd2, 0xe9, 0x85, 0xe9, 0xdf, 0xbd, 0xd2, 0x33, 0x3b, 0xba, 0x58, 0xbb, 0xfa, 0xad, 0xdb, 0xef,
-	0x47, 0x5e, 0x86, 0xc5, 0x1f, 0x85, 0x1c, 0xe3, 0x7b, 0xab, 0x18, 0xa3, 0xa4, 0x66, 0xf6, 0x7d,
-	0x25, 0xfc, 0x7d, 0x87, 0xba, 0x2b, 0xec, 0xe8, 0xed, 0x56, 0x23, 0xcf, 0x71, 0xab, 0x82, 0x42,
-	0xf8, 0xad, 0x08, 0x25, 0xf7, 0x7b, 0x7e, 0x13, 0x24, 0x83, 0x42, 0x64, 0xce, 0x45, 0x0e, 0xf1,
-	0xc1, 0xe5, 0x94, 0x0f, 0x54, 0xee, 0xb7, 0x5d, 0x56, 0xfb, 0x72, 0xca, 0x5f, 0xe7, 0xaf, 0x1e,
-	0x5c, 0x2f, 0x6f, 0x4e, 0xeb, 0x15, 0xe2, 0x23, 0xfc, 0xb4, 0xb1, 0x7d, 0x26, 0x4c, 0x09, 0xda,
-	0x88, 0xde, 0x17, 0x84, 0xf7, 0xcf, 0x8d, 0x24, 0x9f, 0x11, 0x26, 0x0d, 0x87, 0x74, 0xd2, 0xf4,
-	0x23, 0x8d, 0x89, 0x41, 0xf7, 0xbf, 0xad, 0x5b, 0x78, 0x4c, 0xaf, 0xbf, 0xfe, 0xfc, 0xb4, 0x77,
-	0x12, 0x3f, 0xa3, 0xff, 0xbe, 0xca, 0x41, 0xad, 0x4e, 0xd0, 0xfe, 0xb0, 0xbc, 0x39, 0x45, 0xfd,
-	0xfe, 0xed, 0x3c, 0x44, 0xb3, 0x79, 0x88, 0x7e, 0xcc, 0x43, 0xf4, 0x71, 0x11, 0x7a, 0xb3, 0x45,
-	0xe8, 0x7d, 0x5b, 0x84, 0xde, 0xbb, 0x44, 0x2a, 0x9b, 0x4e, 0xf2, 0x61, 0x6a, 0xc1, 0x65, 0xbe,
-	0x50, 0x40, 0x0b, 0xc6, 0x41, 0x2b, 0x9e, 0xd3, 0xab, 0x1a, 0x61, 0x78, 0xe0, 0xde, 0xc7, 0xcb,
-	0xdf, 0x01, 0x00, 0x00, 0xff, 0xff, 0xf4, 0x5a, 0xe1, 0xc6, 0xc4, 0x02, 0x00, 0x00,
+	// 401 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x8c, 0x92, 0xc1, 0x8a, 0x13, 0x31,
+	0x1c, 0xc6, 0x27, 0xbb, 0xed, 0x82, 0xa9, 0x82, 0x04, 0x17, 0x87, 0x51, 0x67, 0xcb, 0xec, 0xc1,
+	0xee, 0x82, 0x13, 0xba, 0xde, 0x3c, 0x16, 0xf6, 0xe0, 0x61, 0xb1, 0xd4, 0x9b, 0x97, 0x92, 0x66,
+	0x42, 0x1a, 0x3a, 0xcd, 0x7f, 0x98, 0xc4, 0xd2, 0xde, 0xa4, 0x4f, 0x20, 0xf8, 0x08, 0xbe, 0x40,
+	0xf1, 0x29, 0x7a, 0x2c, 0x78, 0xf1, 0x24, 0x32, 0x15, 0xfa, 0x1a, 0xd2, 0xb4, 0xb5, 0x03, 0x8e,
+	0xb0, 0xb7, 0xff, 0xfc, 0xbe, 0x8f, 0xff, 0x37, 0x5f, 0x12, 0xfc, 0x8c, 0x8b, 0x9c, 0x53, 0xd0,
+	0x03, 0x60, 0x79, 0xa2, 0xb4, 0xa4, 0x93, 0x36, 0xb5, 0xd3, 0x38, 0xcb, 0xc1, 0x02, 0x21, 0x5b,
+	0x31, 0x3e, 0x8a, 0xf1, 0xa4, 0x1d, 0x3c, 0xe5, 0x60, 0xc6, 0x60, 0xe8, 0xd8, 0x38, 0xef, 0xd8,
+	0xc8, 0x9d, 0x39, 0x78, 0x2e, 0x01, 0x64, 0x2a, 0x28, 0xcb, 0x14, 0x65, 0x5a, 0x83, 0x65, 0x56,
+	0x81, 0x36, 0x7b, 0xf5, 0x89, 0x04, 0x09, 0x6e, 0xa4, 0xdb, 0x69, 0x4f, 0x2f, 0x2b, 0xd2, 0x4b,
+	0x71, 0xce, 0x14, 0x15, 0x08, 0x9f, 0xdf, 0x19, 0xf9, 0x6e, 0xc7, 0xbb, 0x2c, 0xb7, 0x8a, 0xab,
+	0x8c, 0x69, 0x4b, 0x9a, 0xb8, 0x91, 0x1d, 0x3f, 0x7d, 0xd4, 0x44, 0xad, 0x07, 0xbd, 0x32, 0x22,
+	0xb7, 0xb8, 0x21, 0xec, 0xb0, 0x9f, 0xb1, 0x59, 0x0a, 0x2c, 0xf1, 0x4f, 0x9a, 0xa8, 0xd5, 0xb8,
+	0x09, 0xe3, 0x7f, 0x7b, 0xc5, 0xb7, 0x76, 0xd8, 0xdd, 0xb9, 0x3a, 0xb5, 0xe5, 0xcf, 0x0b, 0xaf,
+	0x87, 0xc5, 0x5f, 0x42, 0x2e, 0xf1, 0xa3, 0xed, 0x1a, 0xa3, 0xa4, 0x66, 0xf6, 0x63, 0x2e, 0xfc,
+	0x53, 0x17, 0xf5, 0x50, 0xd8, 0xe1, 0xfb, 0x03, 0x23, 0x04, 0xd7, 0x72, 0x48, 0x85, 0x5f, 0x73,
+	0x9a, 0x9b, 0xc9, 0x39, 0x3e, 0x1b, 0xcd, 0x78, 0x5f, 0x25, 0x7e, 0xdd, 0xd1, 0xfa, 0x68, 0xc6,
+	0xdf, 0x26, 0x6f, 0x1e, 0xcf, 0x37, 0x8b, 0xeb, 0xf2, 0x8f, 0x46, 0x17, 0xf8, 0x45, 0x65, 0xc7,
+	0x9e, 0x30, 0x19, 0x68, 0x23, 0x6e, 0xbe, 0x21, 0x7c, 0x7a, 0x67, 0x24, 0xf9, 0x8a, 0x30, 0xa9,
+	0x38, 0x8a, 0xab, 0xaa, 0x4e, 0x95, 0x1b, 0x83, 0xf6, 0xbd, 0xad, 0x87, 0xf0, 0x88, 0xce, 0xbf,
+	0xff, 0xfe, 0x72, 0x72, 0x15, 0xbd, 0xa4, 0xff, 0xbf, 0xb0, 0x7e, 0xa9, 0x4e, 0x50, 0xff, 0xb4,
+	0x59, 0x5c, 0xa3, 0x4e, 0x67, 0x59, 0x84, 0x68, 0x55, 0x84, 0xe8, 0x57, 0x11, 0xa2, 0xcf, 0xeb,
+	0xd0, 0x5b, 0xad, 0x43, 0xef, 0xc7, 0x3a, 0xf4, 0x3e, 0xb4, 0xa4, 0xb2, 0xf1, 0x24, 0x19, 0xc4,
+	0x16, 0xdc, 0xce, 0x57, 0x0a, 0x68, 0xca, 0x38, 0x68, 0xc5, 0x13, 0x3a, 0x2d, 0x25, 0x0c, 0xce,
+	0xdc, 0x2b, 0x78, 0xfd, 0x27, 0x00, 0x00, 0xff, 0xff, 0x75, 0x86, 0x6d, 0xd1, 0xaa, 0x02, 0x00,
+	0x00,
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
@@ -292,10 +292,12 @@ func (m *MsgOnboardParticipant) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 		i--
 		dAtA[i] = 0x2a
 	}
-	if m.Role != 0 {
-		i = encodeVarintTx(dAtA, i, uint64(m.Role))
+	if len(m.Role) > 0 {
+		i -= len(m.Role)
+		copy(dAtA[i:], m.Role)
+		i = encodeVarintTx(dAtA, i, uint64(len(m.Role)))
 		i--
-		dAtA[i] = 0x20
+		dAtA[i] = 0x22
 	}
 	if len(m.EthSignature) > 0 {
 		i -= len(m.EthSignature)
@@ -374,8 +376,9 @@ func (m *MsgOnboardParticipant) Size() (n int) {
 	if l > 0 {
 		n += 1 + l + sovTx(uint64(l))
 	}
-	if m.Role != 0 {
-		n += 1 + sovTx(uint64(m.Role))
+	l = len(m.Role)
+	if l > 0 {
+		n += 1 + l + sovTx(uint64(l))
 	}
 	l = len(m.KycId)
 	if l > 0 {
@@ -526,10 +529,10 @@ func (m *MsgOnboardParticipant) Unmarshal(dAtA []byte) error {
 			m.EthSignature = string(dAtA[iNdEx:postIndex])
 			iNdEx = postIndex
 		case 4:
-			if wireType != 0 {
+			if wireType != 2 {
 				return fmt.Errorf("proto: wrong wireType = %d for field Role", wireType)
 			}
-			m.Role = 0
+			var stringLen uint64
 			for shift := uint(0); ; shift += 7 {
 				if shift >= 64 {
 					return ErrIntOverflowTx
@@ -539,11 +542,24 @@ func (m *MsgOnboardParticipant) Unmarshal(dAtA []byte) error {
 				}
 				b := dAtA[iNdEx]
 				iNdEx++
-				m.Role |= Role(b&0x7F) << shift
+				stringLen |= uint64(b&0x7F) << shift
 				if b < 0x80 {
 					break
 				}
 			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthTx
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthTx
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.Role = string(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
 		case 5:
 			if wireType != 2 {
 				return fmt.Errorf("proto: wrong wireType = %d for field KycId", wireType)