using System;

using Newtonsoft.Json;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        var json = "{\r\n \"sampleClass\":{ \"name\":\"Name\"} , \"sampleOtherClass\":{ \"name\":\"OtherName\"} ,\r\n  \"X\": \"Jan\"\r\n}";

        var result  =JsonConvert.DeserializeObject<Test>(json);

        foreach(var item in result.Y)

        {

            Console.WriteLine("key: " + item.Key);

            Console.WriteLine("value: " + item.Value);

            Console.WriteLine("type: " +  item.Value.GetType());

            Console.WriteLine("\n");

        }

    }

}

​

public class Test

{

    public string X { get; set; }

​

    [JsonExtensionData]

    public Dictionary<string, object> Y { get; set; }

}

public class ClassName {

    public string Name { get;set; }

}

public class SampleOtherClass {

    public string Name { get;set; }

}