What I did for multiple calls was have all the requests bind to the same OnComplete OnFail binds. I use an enum to tell which call was just made. I then Switch on the enum and send the handlers to a different class. Here are my BPs.
Here is an example call. I edited the Plugin a little to work with Play Fab. All my obect creation is behind the scenes to make blueprints readable. It is still the same process though. This is a request.
The next image is on the event graph of the same object. I use an enum to decide where the response should be sent.
I am actually in the progress of adding the entire PlayFab API into a modified VaRest plugin. It simplifies the process alot.
- Josh