<PackageReference Include="Newtonsoft.Json.Bson" Version="1.0.2" />

Newtonsoft.Json.Bson.BsonDataObjectId

public class BsonDataObjectId
Represents a BSON Oid (object id).
namespace Newtonsoft.Json.Bson { public class BsonDataObjectId { public byte[] Value { get; } public BsonDataObjectId(byte[] value); } }