diff --git a/client/client.go b/client/client.go
index b1382f0..69ff9aa 100644
--- a/client/client.go
+++ b/client/client.go
@@ -280,7 +280,7 @@ func (c *Client) StartContractByYPK(isPrivate bool, path string, script string)
 func (c *Client) ExecuteContract(
 	contractID string,
 	operation string,
-	arg string,
+	arg any,
 	withDynamicAnalysis bool,
 	withSignature bool,
 ) (*HttpResponse[ExecuteContractResponse[any]], error) {
@@ -293,7 +293,18 @@ func (c *Client) ExecuteContract(
 	}
 
 	if withSignature {
-		body["signature"] = c.Sign(contractID+"|"+operation+"|"+arg+"|"+c.pubHex, nil, nil)
+		argStr := ""
+		if v, ok := arg.(string); ok {
+			argStr = v
+		} else {
+			v, err := json.Marshal(arg)
+			if err != nil {
+				return nil, fmt.Errorf("arg %v marshal err", arg)
+			}
+			argStr = string(v)
+		}
+
+		body["signature"] = c.Sign(contractID+"|"+operation+"|"+argStr+"|"+c.pubHex, nil, nil)
 		body["pubkey"] = c.pubHex
 	}
 
diff --git a/client/client_test.go b/client/client_test.go
index ebdbd9d..b7a8dac 100644
--- a/client/client_test.go
+++ b/client/client_test.go
@@ -19,14 +19,14 @@ func TestStruct(t *testing.T) {
 }
 
 func genClient() (*Client, error) {
-	url := "http://021.node.internetapi.cn:43030/SCIDE"
+	url := "http://127.0.0.1:21030/SCIDE"
 
-	pub, err := sm2util.ParsePublicKey("04153ad2d70e67741e0fc33e0c92c702e2afba2480dbea73d23fd02a3ce3a1b69979a7006a8e045f8836ae4797a8fe426823d7ad3450817e794948c8e47b60b711")
+	pub, err := sm2util.ParsePublicKey("04180354fdb6507f8ab98ccfbe165ce11da74ba733f81af86ad6d32216b32cf4f797c559d50ceeefbf4c760c3483840471c67471b90acdffb388cd7d496d9a1610")
 	if err != nil {
 		return nil, err
 	}
 
-	priv, err := sm2util.ParsePrivateKey("31672b434458fdb6b854e64ededeb51305bc4d0bd258a5276ccb9bc86f7c03f6", pub)
+	priv, err := sm2util.ParsePrivateKey("1d4196947f59532db6f8f4055e58474a48db8f30b476ae3edc66406464521b3b", pub)
 	if err != nil {
 		return nil, err
 	}
@@ -86,7 +86,7 @@ func TestClient_ExecuteContract(t *testing.T) {
 		t.Error(err)
 	}
 
-	resp, err := client.ExecuteContract("GlobalRouter", "resolveDoIdTest", "{\"doId\":\"bdtest021/ControlProxy\"}", false, true)
+	resp, err := client.ExecuteContract("GlobalRouter", "listID", map[string]any{"offset": 0, "count": 12, "queryByCreateTime": "true", "filter": "prefixId"}, false, true)
 
 	if err != nil {
 		t.Log(resp)