diff --git a/src/metamgr.rs b/src/metamgr.rs
index d39b0b7..9191c9d 100644
--- a/src/metamgr.rs
+++ b/src/metamgr.rs
@@ -5,7 +5,10 @@ use protobuf::Message;
 use protobuf::descriptor::FieldDescriptorProto_Type;
 
 pub trait ProtoMsg {
-    fn get_proto(&self) -> &dyn Message;
+    fn deserialize(&self,
+                   obj: &serde_json::Map<String, serde_json::Value>,
+                   id_key: &mut i64,
+                   name_key: &mut String) {}
     fn init1(&self) {}
     fn init2(&self) {}
     fn init3(&self) {}
@@ -26,19 +29,22 @@ pub struct MetaMgr<T> {
     meta_classes: Vec<MetaClass::<T>>,
 }
 
-fn json_to_pb(obj: &serde_json::Map<String, serde_json::Value>, pb: &dyn protobuf::Message) {
+fn json_to_pb(obj: &serde_json::Map<String, serde_json::Value>, pb: &mut dyn protobuf::Message) {
+    let mut v = Vec::<u8>::new();
     let desc = pb.descriptor();
     for field in desc.fields() {
         let field_desc = field.proto();
         match obj.get(field.name()) {
             Some(v) => {
-
             }
             None => {
 
             }
         }
     }
+    let mut slice: &[u8] = v.as_slice();
+    let is = &mut ::protobuf::CodedInputStream::new(&mut slice);
+    pb.merge_from(is);
 }
 
 impl<T: Clone + ProtoMsg> MetaMgr<T> {
@@ -69,7 +75,9 @@ impl<T: Clone + ProtoMsg> MetaMgr<T> {
                                 },
                                 serde_json::Value::Object(obj) =>{
                                     let msg = Rc::new(meta.dummy.clone());
-                                    json_to_pb(&obj, msg.get_proto());
+                                    let id_key = &mut 0;
+                                    let name_key = &mut String::new();
+                                    msg.deserialize(&obj, id_key, name_key);
                                     meta.wrap_list.push(msg);
                                 },
                                 _ => {