using System;

using Newtonsoft.Json;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    public static void Main()

    {

        var json = "[{ \"$1\": 2 }]";

        var result = JsonConvert.DeserializeObject<List<(string, int Count)>>(json);

        Console.WriteLine(result.Single().Count);

    }

}