fix:json format

@@ -6,7 +6,7 @@ class Json
 {
 {
     public static function marshal(array $array)
     public static function marshal(array $array)
     {
     {
-        return \json_encode($array, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE);
+        return \json_encode($array, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE | JSON_FORCE_OBJECT);
     }
     }
 
 
     public static function unmarshal(string $value, $associative = true)
     public static function unmarshal(string $value, $associative = true)