private void Start()
{
    // set data
    Primitive primitive = new();
    var a = new ServerResponse() { typeResponse = TypeResponse.WebSocketConnectSucces, message = "xxx1" };
    primitive.Add.Struct(a);


    // get data
    byte[] buffer = primitive.GetBytes();
    var message = Encoding.UTF8.GetString(buffer);
    Debug.Log(message);
}