I have a contract defined like this:

using Newtonsoft.Json;
using Newtonsoft.Json.Linq;

public class Foo 
{
    [JsonProperty("type")]
    public int Type { get; set; }

    [JsonProperty("value")]
    public JObject Value { get; set; }
}

Type property defines the type which Value is deserialized to.

This contract is used by 2 separate microservices.
One of microservices wants to switch to System.Text.Json instead of Newtonsoft while another microservice will still use Newtonsoft for some time.

It’s fine with Type property – I just add JsonPropertyName("type") attribute from System.Text.Json.

But what to do with Value property? It’s type is already a JObject – type defined in Newtonsoft. What is a correct way to handle it?