How do I send a google.protobuf.Value object using protobuf-net.Grpc and code-first?

[glazkovalex]

The protobuf format has the type google.protobuf.Value described in Create Protobuf messages for .NET apps.
There is also a Google.Protobuf.WellKnownTypes.Value type in the Google.Protobuf, Version=3.28.0.0 library.

I can send google.protobuf.Value with a message described by such a proto-file:

import "google/protobuf/struct.proto";

message Status {
// ...
    google.protobuf.Value data = 3;
}

As a result, I will get a generated dot with a "data" field of the type Google.Protobuf.WellKnownTypes.Value. I can assign an arbitrary JsonDocument to this "data" in the following way and everything will be transmitted perfectly.

var dto = new Status();
dto.Data = Google.Protobuf.WellKnownTypes.Value.Parser.ParseJson(myJsonDocument.RootElement.ToString())

I used protobuf-net.Grpc and applied code-first by creating such a dto with the field Google.Protobuf.WellKnownTypes.Value

[DataContract]
public class ObjectTypeDto
{
    [DataMember(Order = 1)]
    public Google.Protobuf.WellKnownTypes.Value Data { get; set; }
}

If I pass my myJsonDocument through it as before, I get an exception: System.InvalidOperationException: No serializer defined for type: Google.Protobuf.WellKnownTypes.Value

How do I send a google.protobuf.Value(Google.Protobuf.WellKnownTypes.Value) object using protobuf-net.Grpc and code-first?