- add callback sign check.

utils/utils.go

@@ -173,3 +173,15 @@ func MustInterface2Int64(data interface{}) int64 {
 	}
 	return retVal
 }
+
+func MergeMaps(firstMap map[string]interface{}, otherMaps ...map[string]interface{}) (retVal map[string]interface{}) {
+	retVal = make(map[string]interface{})
+	allMaps := append(otherMaps, firstMap)
+	for _, oneMap := range allMaps {
+		for k, v := range oneMap {
+			retVal[k] = v
+		}
+	}
+
+	return retVal
+}