using System;

using System.Collections.Generic;

using Newtonsoft.Json;

public class Program

{

    public static void Main()

    {

        var dict = new Dictionary<string, Dictionary<string, string>>(StringComparer.OrdinalIgnoreCase);

        dict["x"] = new Dictionary<string, string>();

        dict["x"]["y"] = "something";

        var serialized = JsonConvert.SerializeObject(dict);

        var unSerialized = JsonConvert.DeserializeObject<Dictionary<string, Dictionary<string, string>>>(serialized);

        Console.WriteLine((dict.Comparer == unSerialized.Comparer ? "Same" : "Different"));

    }

}