using System;

using Newtonsoft.Json;

public class Program

{

    public static void Main()

    {

        var raw = "{ \"MyDate\": \"2021-11-03T00:00:00.000Z\" }";

        var data = JsonConvert.DeserializeObject<Data>(raw);

        Console.WriteLine(data.MyDate);

    }

}

​

public class Data

{

    public DateTime MyDate {get;set;}   

}