Convert Entry JSON to Entry Model

namespace csclt
{
    using System;
    using System.Collections.Generic;

    using Newtonsoft.Json;

    using Contentstack.Core;
    using Contentstack.Core.Configuration;
    using Contentstack.Core.Models;

    public class Program
    {
        static void Main(string[] args)
        {
            ContentstackClient stack = new ContentstackClient(new ContentstackOptions()
            {
                ApiKey = "blt94519f01d8f92c86",
                AccessToken = "cs99af6674ef2a7a53770da6b7",
                Environment = "contentdelivery",
            });
            Entry entry = stack.ContentType("fieldtypes").Entry(
                "blt63b6985324826b78").Fetch<Entry>().GetAwaiter().GetResult();
            Console.WriteLine("Title Property: " + entry.Title);
            Console.WriteLine("Title Field from JSON: " + entry.Object["title"]);
            JsonSerializer serializer = JsonSerializer.Create(stack.SerializerSettings);
            FieldTypesEntry entryModel = entry.As<FieldTypesEntry>(serializer);
            entryModel.Render();
        }
    }

    public static class EntryExtensions
    {
        public static TEntryModel As<TEntryModel>(this Entry entry, JsonSerializer serializer)
        {
            return entry.ToJson().ToObject<TEntryModel>(serializer);
        }
    }

    public class AssetMetadata
    {
        public string Url { get; set; }
    }

    public class FieldTypesEntry
    {
        public List<string> StringField { get; set; }

        [JsonProperty(propertyName: "datefield")]
        public List<DateTime> DateTimeField { get; set; }

        public List<string> RichTextField { get; set; }

        [JsonProperty(propertyName: "asssetfield")]
        public List<AssetMetadata> AssetField { get; set; }

        [JsonProperty(propertyName: "numberfiel")]
        public List<double?> NumberField { get; set; }

        public void Render()
        {
            Console.WriteLine(GetType());

            foreach (double? number in NumberField)
            {
                Console.WriteLine("NumberField: " + number);
            }

            foreach (string value in StringField)
            {
                Console.WriteLine("StringField: " + value);
            }

            foreach (DateTime dt in DateTimeField)
            {
                Console.WriteLine("DateTimeField: " + dt);
            }

            foreach (string richText in RichTextField)
            {
                Console.WriteLine("RichTextField: " + richText);
            }

            foreach (AssetMetadata asset in AssetField)
            {
                Console.WriteLine("AssetField: " + asset.Url);
            }
        }
    }
}