diff --git a/wallets/react-wallet-v2/src/components/Modal.tsx b/wallets/react-wallet-v2/src/components/Modal.tsx
index 29f6204..4f66a34 100644
--- a/wallets/react-wallet-v2/src/components/Modal.tsx
+++ b/wallets/react-wallet-v2/src/components/Modal.tsx
@@ -1,6 +1,7 @@
 import ModalStore from '@/store/ModalStore'
 import SessionProposalModal from '@/views/SessionProposalModal'
 import SessionRequestModal from '@/views/SessionSignModal'
+import SessionSignTypedDataModal from '@/views/SessionSignTypedDataModal'
 import { Modal as NextModal } from '@nextui-org/react'
 import { useSnapshot } from 'valtio'
 
@@ -11,6 +12,7 @@ export default function Modal() {
     <NextModal blur open={open} style={{ border: '1px solid rgba(139, 139, 139, 0.4)' }}>
       {view === 'SessionProposalModal' && <SessionProposalModal />}
       {view === 'SessionSignModal' && <SessionRequestModal />}
+      {view === 'SessionSignTypedDataModal' && <SessionSignTypedDataModal />}
     </NextModal>
   )
 }
diff --git a/wallets/react-wallet-v2/src/data/EIP155Data.ts b/wallets/react-wallet-v2/src/data/EIP155Data.ts
index c9ecf2d..7e7a730 100644
--- a/wallets/react-wallet-v2/src/data/EIP155Data.ts
+++ b/wallets/react-wallet-v2/src/data/EIP155Data.ts
@@ -16,7 +16,7 @@ export type TEIP155Chain = keyof typeof EIP155_CHAINS
 /**
  * Chains
  */
-export const EIP155_CHAINS = {
+export const EIP155_MAINNET_CHAINS = {
   'eip155:1': {
     chainId: 1,
     name: 'Ethereum',
@@ -70,6 +70,8 @@ export const EIP155_TEST_CHAINS = {
   }
 }
 
+export const EIP155_CHAINS = { ...EIP155_MAINNET_CHAINS, ...EIP155_TEST_CHAINS }
+
 /**
  * Methods
  */
@@ -78,6 +80,7 @@ export const EIP155_SIGNING_METHODS = {
   ETH_SIGN: 'eth_sign',
   ETH_SIGN_TRANSACTION: 'eth_signTransaction',
   ETH_SIGN_TYPED_DATA: 'eth_signTypedData',
+  ETH_SIGN_TYPED_DATA_V3: 'eth_signTypedData_v3',
   ETH_SIGN_TYPED_DATA_V4: 'eth_signTypedData_v4',
   ETH_SIGN_RAW_TRANSACTION: 'eth_sendRawTransaction',
   ETH_SEND_TRANSACTION: 'eth_sendTransaction'
diff --git a/wallets/react-wallet-v2/src/hooks/useWalletConnectEventsManager.ts b/wallets/react-wallet-v2/src/hooks/useWalletConnectEventsManager.ts
index d5497da..e1cd614 100644
--- a/wallets/react-wallet-v2/src/hooks/useWalletConnectEventsManager.ts
+++ b/wallets/react-wallet-v2/src/hooks/useWalletConnectEventsManager.ts
@@ -20,9 +20,21 @@ export default function useWalletConnectEventsManager(initialized: boolean) {
     const { method } = request
     const requestSession = await walletConnectClient.session.get(topic)
 
+    // Hanle message signing requests of various formats
     if ([EIP155_SIGNING_METHODS.ETH_SIGN, EIP155_SIGNING_METHODS.PERSONAL_SIGN].includes(method)) {
       ModalStore.open('SessionSignModal', { requestEvent, requestSession })
     }
+
+    // Hanle data signing requests of various formats
+    if (
+      [
+        EIP155_SIGNING_METHODS.ETH_SIGN_TYPED_DATA,
+        EIP155_SIGNING_METHODS.ETH_SIGN_TYPED_DATA_V3,
+        EIP155_SIGNING_METHODS.ETH_SIGN_TYPED_DATA_V4
+      ].includes(method)
+    ) {
+      ModalStore.open('SessionSignTypedDataModal', { requestEvent, requestSession })
+    }
   }, [])
 
   useEffect(() => {
diff --git a/wallets/react-wallet-v2/src/pages/index.tsx b/wallets/react-wallet-v2/src/pages/index.tsx
index 36d6a0e..5946476 100644
--- a/wallets/react-wallet-v2/src/pages/index.tsx
+++ b/wallets/react-wallet-v2/src/pages/index.tsx
@@ -1,6 +1,6 @@
 import AccountCard from '@/components/AccountCard'
 import PageHeader from '@/components/PageHeader'
-import { EIP155_CHAINS, EIP155_TEST_CHAINS } from '@/data/EIP155Data'
+import { EIP155_MAINNET_CHAINS, EIP155_TEST_CHAINS } from '@/data/EIP155Data'
 import SettingsStore from '@/store/SettingsStore'
 import { wallet } from '@/utils/WalletUtil'
 import { Text } from '@nextui-org/react'
@@ -16,7 +16,7 @@ export default function HomePage() {
       <Text h4 css={{ marginBottom: '$5' }}>
         Mainnets
       </Text>
-      {Object.values(EIP155_CHAINS).map(({ name, logo, rgb }) => (
+      {Object.values(EIP155_MAINNET_CHAINS).map(({ name, logo, rgb }) => (
         <AccountCard key={name} name={name} logo={logo} rgb={rgb} address={wallet.address} />
       ))}
 
diff --git a/wallets/react-wallet-v2/src/store/ModalStore.ts b/wallets/react-wallet-v2/src/store/ModalStore.ts
index b46b454..2fe913d 100644
--- a/wallets/react-wallet-v2/src/store/ModalStore.ts
+++ b/wallets/react-wallet-v2/src/store/ModalStore.ts
@@ -13,7 +13,7 @@ interface ModalData {
 
 interface State {
   open: boolean
-  view?: 'SessionProposalModal' | 'SessionSignModal'
+  view?: 'SessionProposalModal' | 'SessionSignModal' | 'SessionSignTypedDataModal'
   data?: ModalData
 }
 
diff --git a/wallets/react-wallet-v2/src/store/SettingsStore.ts b/wallets/react-wallet-v2/src/store/SettingsStore.ts
index 2771f4e..05c664f 100644
--- a/wallets/react-wallet-v2/src/store/SettingsStore.ts
+++ b/wallets/react-wallet-v2/src/store/SettingsStore.ts
@@ -11,7 +11,7 @@ interface State {
  * State
  */
 const state = proxy<State>({
-  testNets: false
+  testNets: Boolean(localStorage.getItem('TEST_NETS')) ?? false
 })
 
 /**
@@ -22,6 +22,11 @@ const SettingsStore = {
 
   toggleTestNets() {
     state.testNets = !state.testNets
+    if (state.testNets) {
+      localStorage.setItem('TEST_NETS', 'YES')
+    } else {
+      localStorage.removeItem('TEST_NETS')
+    }
   }
 }
 
diff --git a/wallets/react-wallet-v2/src/utils/HelperUtil.ts b/wallets/react-wallet-v2/src/utils/HelperUtil.ts
index 62c3567..0703c53 100644
--- a/wallets/react-wallet-v2/src/utils/HelperUtil.ts
+++ b/wallets/react-wallet-v2/src/utils/HelperUtil.ts
@@ -26,3 +26,29 @@ export function convertHexToUtf8(value: string) {
 
   return value
 }
+
+/**
+ * Gets message from various signing request methods by filtering out
+ * a value that is not an address (thus is a message).
+ * If it is a hex string, it gets converted to utf8 string
+ */
+export function getSignParamsMessage(params: string[]) {
+  const message = params.filter(p => !utils.isAddress(p))[0]
+
+  return convertHexToUtf8(message)
+}
+
+/**
+ * Gets data from various signTypedData request methods by filtering out
+ * a value that is not an address (thus is data).
+ * If data is a string convert it to object
+ */
+export function getSignTypedDataParamsData(params: string[]) {
+  const data = params.filter(p => !utils.isAddress(p))[0]
+
+  if (typeof data === 'string') {
+    return JSON.parse(data)
+  }
+
+  return data
+}
diff --git a/wallets/react-wallet-v2/src/utils/RequestHandlerUtil.ts b/wallets/react-wallet-v2/src/utils/RequestHandlerUtil.ts
index 498e8b5..1db5ef5 100644
--- a/wallets/react-wallet-v2/src/utils/RequestHandlerUtil.ts
+++ b/wallets/react-wallet-v2/src/utils/RequestHandlerUtil.ts
@@ -1,5 +1,5 @@
 import { EIP155_SIGNING_METHODS } from '@/data/EIP155Data'
-import { convertHexToUtf8 } from '@/utils/HelperUtil'
+import { getSignParamsMessage, getSignTypedDataParamsData } from '@/utils/HelperUtil'
 import { formatJsonRpcError, formatJsonRpcResult } from '@json-rpc-tools/utils'
 import { RequestEvent } from '@walletconnect/types'
 import { ERROR } from '@walletconnect/utils'
@@ -9,13 +9,28 @@ export async function approveEIP155Request(request: RequestEvent['request'], wal
   const { method, params, id } = request
 
   switch (method) {
+    /**
+     * Handle message signing requests
+     */
     case EIP155_SIGNING_METHODS.PERSONAL_SIGN:
-      const personalSignResult = await wallet.signMessage(convertHexToUtf8(params[0]))
-      return formatJsonRpcResult(id, personalSignResult)
-
     case EIP155_SIGNING_METHODS.ETH_SIGN:
-      const ethSignResult = await wallet.signMessage(convertHexToUtf8(params[1]))
-      return formatJsonRpcResult(id, ethSignResult)
+      const message = getSignParamsMessage(params)
+      const signedMessage = await wallet.signMessage(message)
+      return formatJsonRpcResult(id, signedMessage)
+
+    /**
+     * Handle data signing requests
+     */
+    case EIP155_SIGNING_METHODS.ETH_SIGN_TYPED_DATA:
+    case EIP155_SIGNING_METHODS.ETH_SIGN_TYPED_DATA_V3:
+    case EIP155_SIGNING_METHODS.ETH_SIGN_TYPED_DATA_V4:
+      const { domain, types, message: data } = getSignTypedDataParamsData(params)
+
+      // https://github.com/ethers-io/ethers.js/issues/687#issuecomment-714069471
+      delete types.EIP712Domain
+
+      const signedData = await wallet._signTypedData(domain, types, data)
+      return formatJsonRpcResult(id, signedData)
 
     default:
       throw new Error(ERROR.UNKNOWN_JSONRPC_METHOD.format().message)
diff --git a/wallets/react-wallet-v2/src/utils/WalletUtil.ts b/wallets/react-wallet-v2/src/utils/WalletUtil.ts
index 527a66c..be73ad6 100644
--- a/wallets/react-wallet-v2/src/utils/WalletUtil.ts
+++ b/wallets/react-wallet-v2/src/utils/WalletUtil.ts
@@ -1,17 +1,15 @@
 import { Wallet } from 'ethers'
 
-const STORAGE_KEY = 'WALLET_MNEMONIC'
-
 export let wallet: Wallet
 
 export function createOrRestoreWallet() {
-  const mnemonic = localStorage.getItem(STORAGE_KEY)
+  const mnemonic = localStorage.getItem('WALLET_MNEMONIC')
 
   if (mnemonic) {
     wallet = Wallet.fromMnemonic(mnemonic)
   } else {
     wallet = Wallet.createRandom()
     // Don't store mnemonic in local storage in a production project!
-    localStorage.setItem(STORAGE_KEY, wallet.mnemonic.phrase)
+    localStorage.setItem('WALLET_MNEMONIC', wallet.mnemonic.phrase)
   }
 }
diff --git a/wallets/react-wallet-v2/src/views/SessionSignModal.tsx b/wallets/react-wallet-v2/src/views/SessionSignModal.tsx
index 57a66c5..5c8a6d2 100644
--- a/wallets/react-wallet-v2/src/views/SessionSignModal.tsx
+++ b/wallets/react-wallet-v2/src/views/SessionSignModal.tsx
@@ -1,6 +1,6 @@
-import { EIP155_CHAINS, EIP155_SIGNING_METHODS, TEIP155Chain } from '@/data/EIP155Data'
+import { EIP155_CHAINS, TEIP155Chain } from '@/data/EIP155Data'
 import ModalStore from '@/store/ModalStore'
-import { convertHexToUtf8 } from '@/utils/HelperUtil'
+import { getSignParamsMessage } from '@/utils/HelperUtil'
 import { approveEIP155Request, rejectEIP155Request } from '@/utils/RequestHandlerUtil'
 import { walletConnectClient } from '@/utils/WalletConnectUtil'
 import { wallet } from '@/utils/WalletUtil'
@@ -24,8 +24,7 @@ export default function SessionSignModal() {
   const { name, icons, url } = requestSession.peer.metadata
 
   // Get message, convert it to UTF8 string if it is valid hex
-  let message = method === EIP155_SIGNING_METHODS.PERSONAL_SIGN ? params[0] : params[1]
-  message = convertHexToUtf8(message)
+  const message = getSignParamsMessage(params)
 
   // Handle approve action (logic varies based on request method)
   async function onApprove() {
@@ -54,7 +53,7 @@ export default function SessionSignModal() {
   return (
     <Fragment>
       <Modal.Header>
-        <Text h3>Request</Text>
+        <Text h3>Sign Message</Text>
       </Modal.Header>
 
       <Modal.Body>
diff --git a/wallets/react-wallet-v2/src/views/SessionSignTypedDataModal.tsx b/wallets/react-wallet-v2/src/views/SessionSignTypedDataModal.tsx
new file mode 100644
index 0000000..025ce1e
--- /dev/null
+++ b/wallets/react-wallet-v2/src/views/SessionSignTypedDataModal.tsx
@@ -0,0 +1,121 @@
+import { EIP155_CHAINS, TEIP155Chain } from '@/data/EIP155Data'
+import ModalStore from '@/store/ModalStore'
+import { getSignTypedDataParamsData } from '@/utils/HelperUtil'
+import { approveEIP155Request, rejectEIP155Request } from '@/utils/RequestHandlerUtil'
+import { walletConnectClient } from '@/utils/WalletConnectUtil'
+import { wallet } from '@/utils/WalletUtil'
+import { Avatar, Button, Col, Container, Divider, Link, Modal, Row, Text } from '@nextui-org/react'
+import { Fragment } from 'react'
+
+export default function SessionSignTypedDataModal() {
+  // Get request and wallet data from store
+  const requestEvent = ModalStore.state.data?.requestEvent
+  const requestSession = ModalStore.state.data?.requestSession
+
+  // Ensure request and wallet are defined
+  if (!requestEvent || !requestSession) {
+    return <Text>Missing request data</Text>
+  }
+
+  // Get required request data
+  const { chainId } = requestEvent
+  const { method, params } = requestEvent.request
+  const { protocol } = requestSession.relay
+  const { name, icons, url } = requestSession.peer.metadata
+
+  // Get data
+  const data = getSignTypedDataParamsData(params)
+
+  // Handle approve action (logic varies based on request method)
+  async function onApprove() {
+    if (requestEvent) {
+      const response = await approveEIP155Request(requestEvent.request, wallet)
+      await walletConnectClient.respond({
+        topic: requestEvent.topic,
+        response
+      })
+      ModalStore.close()
+    }
+  }
+
+  // Handle reject action
+  async function onReject() {
+    if (requestEvent) {
+      const response = rejectEIP155Request(requestEvent.request)
+      await walletConnectClient.respond({
+        topic: requestEvent.topic,
+        response
+      })
+      ModalStore.close()
+    }
+  }
+
+  return (
+    <Fragment>
+      <Modal.Header>
+        <Text h3>Sign Typed Data</Text>
+      </Modal.Header>
+
+      <Modal.Body>
+        <Container css={{ padding: 0 }}>
+          <Row align="center">
+            <Col span={3}>
+              <Avatar src={icons[0]} />
+            </Col>
+            <Col span={14}>
+              <Text h5>{name}</Text>
+              <Link href={url}>{url}</Link>
+            </Col>
+          </Row>
+
+          <Divider y={2} />
+
+          <Row>
+            <Col>
+              <Text h5>Blockchain</Text>
+              <Text color="$gray400">
+                {EIP155_CHAINS[chainId as TEIP155Chain]?.name ?? chainId}
+              </Text>
+            </Col>
+          </Row>
+
+          <Divider y={2} />
+
+          <Row>
+            <Col>
+              <Text h5>Message</Text>
+              <Text color="$gray400">{JSON.stringify(data)}</Text>
+            </Col>
+          </Row>
+
+          <Divider y={2} />
+
+          <Row>
+            <Col>
+              <Text h5>Method</Text>
+              <Text color="$gray400">{method}</Text>
+            </Col>
+          </Row>
+
+          <Divider y={2} />
+
+          <Row>
+            <Col>
+              <Text h5>Relay Protocol</Text>
+              <Text color="$gray400">{protocol}</Text>
+            </Col>
+          </Row>
+        </Container>
+      </Modal.Body>
+
+      <Modal.Footer>
+        <Button auto flat color="error" onClick={onReject}>
+          Reject
+        </Button>
+        <Button auto flat color="success" onClick={onApprove}>
+          Approve
+        </Button>
+      </Modal.Footer>
+    </Fragment>
+  )
+}