using System;

using Newtonsoft.Json;

​

public static class Program

{

    public static void Main()

    {       

        var msg = new Message { Id = 123, Text = "Hello World" };

        string json = JsonConvert.SerializeObject(msg);

        dynamic dy = JsonConvert.DeserializeObject<dynamic>(json);

        Console.WriteLine("{ Id = " + dy.Id + ", Text = " + dy.Text + " }"); 

    }

​

    public class Message

    {

        public int Id {get;set;}

        public string Text { get; set; }

    }

}