using System;

using Newtonsoft.Json;

using Newtonsoft.Json.Linq;

​

public class Program

{

    public static void Main()

    {

        string json = @"{

                'SomeDateTime': '2023-01-17T20:45:51.959+08:00'

            }";

        JsonSerializerSettings settings = new JsonSerializerSettings{ 

        DateParseHandling = DateParseHandling.None };

        JObject obj = JsonConvert.DeserializeObject<JObject>(json);

        Console.WriteLine(obj);

        //apply settings to preserve timezone

        JObject obj2 = JsonConvert.DeserializeObject<JObject>(json,settings);

        Console.WriteLine(obj2);

    }

}