diff --git a/service/operator/try_pay_user_op_execute.go b/service/operator/try_pay_user_op_execute.go
index 3f3d5d58..1c343d1b 100644
--- a/service/operator/try_pay_user_op_execute.go
+++ b/service/operator/try_pay_user_op_execute.go
@@ -133,7 +133,7 @@ func getPayMasterSignature(strategy *model.Strategy, userOp *model.UserOperation
 }
 func packUserOp(userOp *model.UserOperation) (string, error) {
 	abiEncoder, err := abi.JSON(strings.NewReader(`[
-{
+    {
         "inputs": [
             {
                 "components": [
@@ -194,7 +194,7 @@ func packUserOp(userOp *model.UserOperation) (string, error) {
                     }
                 ],
                 "internalType": "struct UserOperation",
-                "name": "op",
+                "name": "userOp",
                 "type": "tuple"
             }
         ],
@@ -203,14 +203,12 @@ func packUserOp(userOp *model.UserOperation) (string, error) {
         "stateMutability": "nonpayable",
         "type": "function"
     }
-	]`))
+]`))
 	if err != nil {
 		return "", err
 	}
 
-	encoded, err := abiEncoder.Pack("test", userOp.Sender.String(), userOp.Nonce, userOp.InitCode,
-		userOp.CallData, userOp.CallGasLimit, userOp.VerificationGasLimit, userOp.PreVerificationGas,
-		userOp.MaxFeePerGas, userOp.MaxPriorityFeePerGas)
+	encoded, err := abiEncoder.Pack("test", userOp)
 	if err != nil {
 		return "", err
 	}
diff --git a/service/operator/try_pay_user_op_execute_test.go b/service/operator/try_pay_user_op_execute_test.go
index 72a7a707..b9da05e5 100644
--- a/service/operator/try_pay_user_op_execute_test.go
+++ b/service/operator/try_pay_user_op_execute_test.go
@@ -35,12 +35,13 @@ func TestGenerateTestData(t *testing.T) {
 }
 func TestPackUserOp(t *testing.T) {
 	userOp, _ := model.NewUserOp(utils.GenerateMockUserOperation())
-	userOp.Signature = nil
 	userOp.PaymasterAndData = nil
-
+	userOp.Signature = nil
 	res, err := packUserOp(userOp)
+
 	assert.NoError(t, err)
 	fmt.Println(res)
+
 }
 func TestPackUserOpV2(t *testing.T) {
 	userOp, _ := model.NewUserOp(utils.GenerateMockUserOperation())