diff --git a/common/model/api_response.go b/common/model/api_response.go
index 2fd4dff..a618c99 100644
--- a/common/model/api_response.go
+++ b/common/model/api_response.go
@@ -15,17 +15,17 @@ type TryPayUserOpResponse struct {
 	UserOpResponse    *UserOpResponse                `json:"userOpResponse"`
 }
 type UserOpResponse struct {
-	PayMasterAndData     string   `json:"paymasterAndData"`
-	PreVerificationGas   *big.Int `json:"preVerificationGas"`
-	VerificationGasLimit *big.Int `json:"verificationGasLimit"`
-	CallGasLimit         *big.Int `json:"callGasLimit"`
-	MaxFeePerGas         *big.Int `json:"maxFeePerGas"`
-	MaxPriorityFeePerGas *big.Int `json:"maxPriorityFeePerGas"`
+	PayMasterAndData     string `json:"paymasterAndData"`
+	PreVerificationGas   string `json:"preVerificationGas"`
+	VerificationGasLimit string `json:"verificationGasLimit"`
+	CallGasLimit         string `json:"callGasLimit"`
+	MaxFeePerGas         string `json:"maxFeePerGas"`
+	MaxPriorityFeePerGas string `json:"maxPriorityFeePerGas"`
 	//v0.7
-	AccountGasLimit               string   `json:"accountGasLimit" binding:"required"`
-	PaymasterVerificationGasLimit *big.Int `json:"paymasterVerificationGasLimit" binding:"required"`
-	PaymasterPostOpGasLimit       *big.Int `json:"paymasterPostOpGasLimit" binding:"required"`
-	GasFees                       string   `json:"gasFees" binding:"required"`
+	AccountGasLimit               string `json:"accountGasLimit" binding:"required"`
+	PaymasterVerificationGasLimit string `json:"paymasterVerificationGasLimit" binding:"required"`
+	PaymasterPostOpGasLimit       string `json:"paymasterPostOpGasLimit" binding:"required"`
+	GasFees                       string `json:"gasFees" binding:"required"`
 }
 
 type ComputeGasResponse struct {
diff --git a/common/utils/util.go b/common/utils/util.go
index 58418ee..3a173c6 100644
--- a/common/utils/util.go
+++ b/common/utils/util.go
@@ -93,7 +93,12 @@ func PackIntTo32Bytes(left *big.Int, right *big.Int) [32]byte {
 
 	return result
 }
+func ConvertHexToBigInt(hex string) *big.Int {
+	bigInt := new(big.Int)
+	bigInt.SetString(hex, 0)
+	return bigInt
 
+}
 func GetGasEntryPointGasPrice(maxFeePerGas *big.Int, maxPriorityFeePerGas *big.Int, baseFee *big.Int) *big.Int {
 	if maxFeePerGas == maxPriorityFeePerGas {
 		// is 1559 not support
@@ -110,6 +115,10 @@ func EncodeToHexStringWithPrefix(data []byte) string {
 	}
 	return res
 }
+func ConvertBigIntToHexWithPrefix(data *big.Int) string {
+	res := fmt.Sprintf("0x%x", data)
+	return res
+}
 
 func DecodeStringWithPrefix(data string) ([]byte, error) {
 	if data[:2] == "0x" {
diff --git a/common/utils/util_test.go b/common/utils/util_test.go
index cb9d0f4..3c3fa7f 100644
--- a/common/utils/util_test.go
+++ b/common/utils/util_test.go
@@ -44,6 +44,18 @@ func TestPackIntTo32Bytes(t *testing.T) {
 	resStr := EncodeToHexStringWithPrefix(bytes[:])
 	t.Logf("resStr: %s\n", resStr)
 }
+func TestConvertBigIntToHexWithPrefix(t *testing.T) {
+	bigInt := big.NewInt(1500000000)
+	resStr := ConvertBigIntToHexWithPrefix(bigInt)
+	t.Logf("resStr: %s\n", resStr)
+}
+func TestConvertHexToBigInt(t *testing.T) {
+	hexStr := "0x5a0c"
+	bigInt := ConvertHexToBigInt(hexStr)
+
+	t.Logf("bigInt: %d\n", bigInt)
+
+}
 
 //func TestEthereumSign(t *testing.T) {
 //	messageStr := "hello world"
diff --git a/service/operator/operator_test.go b/service/operator/operator_test.go
index f71d2d0..7a72ee1 100644
--- a/service/operator/operator_test.go
+++ b/service/operator/operator_test.go
@@ -135,10 +135,9 @@ func TestOperator(t *testing.T) {
 			"Test_NoSpectCode_TryPayUserOpExecute",
 			func(t *testing.T) {
 				request := model.UserOpRequest{
-					StrategyCode:      "8bced19b-505e-4d11-ae80-abbee3d3a38c",
-					Network:           global_const.EthereumSepolia,
-					UserOp:            *utils.GenerateMockUservOperation(),
-					UserPayErc20Token: global_const.TokenTypeUSDT,
+					StrategyCode: "123__GhhSA",
+					Network:      global_const.EthereumSepolia,
+					UserOp:       *utils.GenerateMockUservOperation(),
 				}
 				testTryPayUserOpExecute(t, &request)
 			},
@@ -178,7 +177,10 @@ func testGetSupportEntrypointExecute(t *testing.T) {
 }
 func testTryPayUserOpExecute(t *testing.T, request *model.UserOpRequest) {
 	result, err := TryPayUserOpExecute(&model.ApiKeyModel{
-		UserId: 5,
+		UserId:                        5,
+		ProjectSponsorPaymasterEnable: true,
+		UserPayPaymasterEnable:        true,
+		Erc20PaymasterEnable:          true,
 	}, request)
 	if err != nil {
 		t.Fatal(err)
@@ -204,11 +206,11 @@ func testTryPayUserOpExecute(t *testing.T, request *model.UserOpRequest) {
 	if result.EntrypointVersion == global_const.EntrypointV07 {
 		//TODO
 	} else {
-		userOp.VerificationGasLimit = result.UserOpResponse.VerificationGasLimit
-		userOp.PreVerificationGas = result.UserOpResponse.PreVerificationGas
-		userOp.MaxFeePerGas = result.UserOpResponse.MaxFeePerGas
-		userOp.MaxPriorityFeePerGas = result.UserOpResponse.MaxPriorityFeePerGas
-		userOp.CallGasLimit = result.UserOpResponse.CallGasLimit
+		userOp.VerificationGasLimit = utils.ConvertHexToBigInt(result.UserOpResponse.VerificationGasLimit)
+		userOp.PreVerificationGas = utils.ConvertHexToBigInt(result.UserOpResponse.PreVerificationGas)
+		userOp.MaxFeePerGas = utils.ConvertHexToBigInt(result.UserOpResponse.MaxFeePerGas)
+		userOp.MaxPriorityFeePerGas = utils.ConvertHexToBigInt(result.UserOpResponse.MaxPriorityFeePerGas)
+		userOp.CallGasLimit = utils.ConvertHexToBigInt(result.UserOpResponse.CallGasLimit)
 		address := common.HexToAddress(result.EntryPointAddress)
 		jsonUserOP, err := json.Marshal(userOp)
 		if err != nil {
diff --git a/service/operator/try_pay_user_op_execute.go b/service/operator/try_pay_user_op_execute.go
index 252d1f3..8b38717 100644
--- a/service/operator/try_pay_user_op_execute.go
+++ b/service/operator/try_pay_user_op_execute.go
@@ -183,19 +183,19 @@ func postExecute(apiKeyModel *model.ApiKeyModel, userOp *user_op.UserOpInput, st
 
 		UserOpResponse: &model.UserOpResponse{
 			PayMasterAndData:     utils.EncodeToHexStringWithPrefix(paymasterData),
-			PreVerificationGas:   gasResponse.OpEstimateGas.PreVerificationGas,
-			MaxFeePerGas:         gasResponse.OpEstimateGas.MaxFeePerGas,
-			MaxPriorityFeePerGas: gasResponse.OpEstimateGas.MaxPriorityFeePerGas,
-			VerificationGasLimit: gasResponse.OpEstimateGas.VerificationGasLimit,
-			CallGasLimit:         gasResponse.OpEstimateGas.CallGasLimit,
+			PreVerificationGas:   utils.ConvertBigIntToHexWithPrefix(gasResponse.OpEstimateGas.PreVerificationGas),
+			MaxFeePerGas:         utils.ConvertBigIntToHexWithPrefix(gasResponse.OpEstimateGas.MaxFeePerGas),
+			MaxPriorityFeePerGas: utils.ConvertBigIntToHexWithPrefix(gasResponse.OpEstimateGas.MaxPriorityFeePerGas),
+			VerificationGasLimit: utils.ConvertBigIntToHexWithPrefix(gasResponse.OpEstimateGas.VerificationGasLimit),
+			CallGasLimit:         utils.ConvertBigIntToHexWithPrefix(gasResponse.OpEstimateGas.CallGasLimit),
 		},
 	}
 
 	if strategy.GetStrategyEntrypointVersion() == global_const.EntrypointV07 {
 		result.UserOpResponse.AccountGasLimit = utils.EncodeToHexStringWithPrefix(gasResponse.OpEstimateGas.AccountGasLimit[:])
 		result.UserOpResponse.GasFees = utils.EncodeToHexStringWithPrefix(gasResponse.OpEstimateGas.GasFees[:])
-		result.UserOpResponse.PaymasterVerificationGasLimit = gasResponse.OpEstimateGas.PaymasterVerificationGasLimit
-		result.UserOpResponse.PaymasterPostOpGasLimit = gasResponse.OpEstimateGas.PaymasterPostOpGasLimit
+		result.UserOpResponse.PaymasterVerificationGasLimit = utils.ConvertBigIntToHexWithPrefix(gasResponse.OpEstimateGas.PaymasterVerificationGasLimit)
+		result.UserOpResponse.PaymasterPostOpGasLimit = utils.ConvertBigIntToHexWithPrefix(gasResponse.OpEstimateGas.PaymasterPostOpGasLimit)
 	}
 
 	return result, nil