I could be wrong, but it is probably using json encoding for the object body, and implementing the transport for grpc instead of http. Proto objects support jso

I could be wrong, but it is probably using json encoding for the object body, and implementing the transport for grpc instead of http. Proto objects support json encode/decode by default in all the implementations I've seen. https://grpc.io/blog/grpc-with-json/ https://grpc.io/blog/grpc-with-json/