Microservices only solve this because you have to serialize objects on the wire, no? You could accomplish the same within an app or lib by accepting a String an

Microservices only solve this because you have to serialize objects on the wire, no? You could accomplish the same within an app or lib by accepting a String and calling `serde_json::from_str` on it, avoiding the problems of microservices. Or more realistically, define your own struct and convert it to/from the dependency type at the interface boundary.