diff --git a/internal/api/msg.go b/internal/api/msg.go
index 88f25a425..81564f138 100644
--- a/internal/api/msg.go
+++ b/internal/api/msg.go
@@ -461,7 +461,7 @@ func (m *MessageApi) CallbackExample(c *gin.Context) {
 	}
 
 	content := make(map[string]any, 1)
-	content["content"] = req.Content
+	content[""] = req.Content
 	input := &apistruct.SendMsgReq{
 		RecvID: req.SendID,
 		SendMsg: apistruct.SendMsg{
diff --git a/pkg/common/http/http_client.go b/pkg/common/http/http_client.go
index bae78349c..fc04ec2a8 100644
--- a/pkg/common/http/http_client.go
+++ b/pkg/common/http/http_client.go
@@ -70,7 +70,7 @@ func Post(ctx context.Context, url string, header map[string]string, data any, t
 	}
 
 	log.ZInfo(ctx, "CallbackExample", "jsonStraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", jsonStr)
-	log.ZInfo(ctx, "CallbackExample", "jsonStr", jsonStr)
+	log.ZInfo(ctx, "CallbackExample", "jsonStr", string(jsonStr))
 
 	req, err := http.NewRequestWithContext(ctx, http.MethodPost, url, bytes.NewBuffer(jsonStr))
 	if err != nil {