diff --git a/x/axelarcork/keeper/keeper_test.go b/x/axelarcork/keeper/keeper_test.go
index b27dd2d5..232f1a51 100644
--- a/x/axelarcork/keeper/keeper_test.go
+++ b/x/axelarcork/keeper/keeper_test.go
@@ -293,3 +293,40 @@ func (suite *KeeperTestSuite) TestAxelarCorkContractNonces() {
 		{chain2, address2, 2},
 	}, data)
 }
+
+func (suite *KeeperTestSuite) TestAxelarProxyArgsEncoding() {
+	require := suite.Require()
+
+	address := "0x0000000000000000000000000000000000000000"
+	cellars := []string{sampleCellarHex, "0x1111111111111111111111111111111111111111"}
+
+	_, err := types.EncodeLogicCallArgs(address, 1, 100000000, []byte("testcall"))
+	require.NoError(err)
+	_, err = types.EncodeUpgradeArgs(address, cellars)
+	require.NoError(err)
+}
+
+// TestAxelarProxyUpgradeData tests the upgrade data set, get, and delete functions
+func (suite *KeeperTestSuite) TestAxelarProxyUpgradeData() {
+	ctx, axelarcorkKeeper := suite.ctx, suite.axelarcorkKeeper
+	require := suite.Require()
+
+	chainID := uint64(TestEVMChainID)
+	address := "0x0000000000000000000000000000000000000000"
+	cellars := []string{sampleCellarHex, "0x1111111111111111111111111111111111111111"}
+	payload, err := types.EncodeUpgradeArgs(address, cellars)
+	require.NoError(err)
+	upgradeData := types.AxelarUpgradeData{
+		Payload:                   payload,
+		ExecutableHeightThreshold: 10000000,
+	}
+
+	axelarcorkKeeper.SetAxelarProxyUpgradeData(ctx, chainID, upgradeData)
+	actualUpgradeData, found := axelarcorkKeeper.GetAxelarProxyUpgradeData(ctx, chainID)
+	require.True(found)
+	require.Equal(upgradeData, actualUpgradeData)
+
+	axelarcorkKeeper.DeleteAxelarProxyUpgradeData(ctx, chainID)
+	_, found = axelarcorkKeeper.GetAxelarProxyUpgradeData(ctx, chainID)
+	require.False(found)
+}
diff --git a/x/axelarcork/keeper/msg_server.go b/x/axelarcork/keeper/msg_server.go
index 9f3b9d93..94200570 100644
--- a/x/axelarcork/keeper/msg_server.go
+++ b/x/axelarcork/keeper/msg_server.go
@@ -81,7 +81,7 @@ func (k Keeper) RelayCork(c context.Context, msg *types.MsgRelayAxelarCorkReques
 	}
 
 	nonce := k.IncrementAxelarContractCallNonce(ctx, msg.ChainId, cork.TargetContractAddress)
-	payload, err := types.EncodeExecuteArgs(msg.TargetContractAddress, nonce, cork.Deadline, cork.EncodedContractCall)
+	payload, err := types.EncodeLogicCallArgs(msg.TargetContractAddress, nonce, cork.Deadline, cork.EncodedContractCall)
 	if err != nil {
 		return nil, err
 	}
diff --git a/x/axelarcork/types/axelar_proxy.go b/x/axelarcork/types/axelar_proxy.go
index 2572b163..2398dead 100644
--- a/x/axelarcork/types/axelar_proxy.go
+++ b/x/axelarcork/types/axelar_proxy.go
@@ -4,6 +4,7 @@ import (
 	"math/big"
 
 	"github.com/ethereum/go-ethereum/accounts/abi"
+	"github.com/ethereum/go-ethereum/common"
 )
 
 var (
@@ -14,27 +15,30 @@ var (
 
 	HourInBlocks                     = uint64((60 * 60) / 12)
 	DefaultExecutableHeightThreshold = 72 * HourInBlocks
-)
 
-type UpgradeData struct {
-	Payload                  []byte
-	ExecutionThresholdHeight uint64
-}
+	LogicCallMsgID = big.NewInt(0)
+	UpgradeMsgID   = big.NewInt(1)
+)
 
-func EncodeExecuteArgs(targetContract string, nonce uint64, deadline uint64, callData []byte) ([]byte, error) {
+func EncodeLogicCallArgs(targetContract string, nonce uint64, deadline uint64, callData []byte) ([]byte, error) {
 	return abi.Arguments{
 		{Type: Uint256},
 		{Type: Address},
 		{Type: Uint256},
 		{Type: Uint256},
 		{Type: Bytes},
-	}.Pack(big.NewInt(0), targetContract, big.NewInt(int64(nonce)), big.NewInt(int64(deadline)), callData)
+	}.Pack(LogicCallMsgID, common.HexToAddress(targetContract), big.NewInt(int64(nonce)), big.NewInt(int64(deadline)), callData)
 }
 
 func EncodeUpgradeArgs(newAxelarProxy string, targets []string) ([]byte, error) {
+	targetAddrs := []common.Address{}
+	for _, target := range targets {
+		targetAddrs = append(targetAddrs, common.HexToAddress(target))
+	}
+
 	return abi.Arguments{
 		{Type: Uint256},
 		{Type: Address},
 		{Type: AddressArr},
-	}.Pack(big.NewInt(1), newAxelarProxy, targets)
+	}.Pack(UpgradeMsgID, common.HexToAddress(newAxelarProxy), targetAddrs)
 }