json.net converter for Unity Texture

z_Texture2DJsonConverter.cs

using System;
using Newtonsoft.Json;
using UnityEngine;

public class z_Texture2DJsonConverter : JsonConverter<Texture2D>
{
    public override void WriteJson(JsonWriter writer, Texture2D? value, JsonSerializer serializer)
    {
        writer.WriteValue(value.EncodeToPNG());
    }

    public override Texture2D? ReadJson(JsonReader reader, Type objectType, Texture2D? existingValue, bool hasExistingValue, JsonSerializer serializer)
    {
        var str = (string) reader.Value;
        var bytes = Convert.FromBase64String(str);

        var texture = new Texture2D(2, 2, TextureFormat.ARGB32, 0, true);
        texture.LoadImage(bytes);

        return texture;
    }
}