using System;

using Newtonsoft.Json;

using System.Dynamic;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        dynamic dd = new ExpandoObject();

        var dictionary = (IDictionary<string, object>)dd;

        dictionary.Add("123", "Dddsd");

        var testTuple = Tuple.Create(1234, "foo");

        var serialized = JsonConvert.SerializeObject(dd);

        Console.WriteLine(serialized);

    }

}