using System;

using System.Text.Json;

public class Program

{

    public static void Main()

    {

        // Pass you json string

        string jsonString = "{\"name\":\"John\",\"age\":30,\"Prop\":40,\"city\":\"New York\"}";

​

        // Deserialize the JSON string into a dynamic object

        dynamic dynamicObject = JsonSerializer.Deserialize<dynamic>(jsonString);

        Console.WriteLine(""+ dynamicObject.ToString());

​

    }

}