diff --git a/cli/multisig.go b/cli/multisig.go
index 36f0bb5c9..e5b8e9a41 100644
--- a/cli/multisig.go
+++ b/cli/multisig.go
@@ -6,6 +6,7 @@ import (
 	"encoding/binary"
 	"encoding/hex"
 	"fmt"
+	"github.com/minio/blake2b-simd"
 	"os"
 	"sort"
 	"strconv"
@@ -290,7 +291,7 @@ func state(tx *samsig.Transaction) string {
 var msigProposeCmd = &cli.Command{
 	Name:      "propose",
 	Usage:     "Propose a multisig transaction",
-	ArgsUsage: "[multisigAddress destinationAddress value <methodName methodParams> (optional)]",
+	ArgsUsage: "[multisigAddress destinationAddress value <methodId methodParams> (optional)]",
 	Flags: []cli.Flag{
 		&cli.StringFlag{
 			Name:  "source",
@@ -409,8 +410,13 @@ var msigProposeCmd = &cli.Command{
 var msigApproveCmd = &cli.Command{
 	Name:      "approve",
 	Usage:     "Approve a multisig message",
-	ArgsUsage: "[multisigAddress messageId]",
-	Flags:     []cli.Flag{},
+	ArgsUsage: "[multisigAddress messageId proposerAddress destination value <methodId methodParams> (optional)]",
+	Flags: []cli.Flag{
+		&cli.StringFlag{
+			Name:  "source",
+			Usage: "account to send the approve message from",
+		},
+	},
 	Action: func(cctx *cli.Context) error {
 		api, closer, err := GetFullNodeAPI(cctx)
 		if err != nil {
@@ -419,8 +425,12 @@ var msigApproveCmd = &cli.Command{
 		defer closer()
 		ctx := ReqContext(cctx)
 
-		if cctx.Args().Len() != 2 {
-			return fmt.Errorf("must pass multisig address and message ID")
+		if cctx.Args().Len() < 5 {
+			return fmt.Errorf("must pass multisig address, message ID, proposer address, destination, and value")
+		}
+
+		if cctx.Args().Len() > 5 && cctx.Args().Len() != 7 {
+			return fmt.Errorf("usage: msig approve <msig addr> <message ID> <proposer address> <desination> <value> [ <method> <params> ]")
 		}
 
 		msig, err := address.NewFromString(cctx.Args().Get(0))
@@ -433,9 +443,63 @@ var msigApproveCmd = &cli.Command{
 			return err
 		}
 
+		proposer, err := address.NewFromString(cctx.Args().Get(2))
+		if err != nil {
+			return err
+		}
+
+		if proposer.Protocol() != address.ID {
+			proposer, err = api.StateLookupID(ctx, proposer, types.EmptyTSK)
+			if err != nil {
+				return err
+			}
+		}
+
+		dest, err := address.NewFromString(cctx.Args().Get(3))
+		if err != nil {
+			return err
+		}
+
+		value, err := types.ParseFIL(cctx.Args().Get(4))
+		if err != nil {
+			return err
+		}
+
+		var method uint64
+		var params []byte
+		if cctx.Args().Len() == 7 {
+			m, err := strconv.ParseUint(cctx.Args().Get(5), 10, 64)
+			if err != nil {
+				return err
+			}
+			method = m
+
+			p, err := hex.DecodeString(cctx.Args().Get(6))
+			if err != nil {
+				return err
+			}
+			params = p
+		}
+
+		p := samsig.ProposalHashData{
+			Requester: proposer,
+			To:        dest,
+			Value:     types.BigInt(value),
+			Method:    abi.MethodNum(method),
+			Params:    params,
+		}
+
+		pser, err := p.Serialize()
+		if err != nil {
+			return err
+		}
+		phash := blake2b.Sum256(pser)
+
 		enc, err := actors.SerializeParams(&samsig.TxnIDParams{
-			ID: samsig.TxnID(txid),
+			ID:           samsig.TxnID(txid),
+			ProposalHash: phash[:],
 		})
+
 		if err != nil {
 			return err
 		}