Inject a proto file to convert google.protobuf.Any type into json

Trying to integrate with grpc service in which one of fields in response is of google.protobuf.Any type. To deserialize this to intended proto type I need a way to access the proto file in retool.

I am looking out to use a proto file inside the app. I have a response of one of the grpc apis which is returning google.protobuf.Any type of object, I want to deserialize/unmarshal into json to use it in the retool app.