OVR_Requests_User.h Header File
Overview: User objects represent people in the real world; their hopes, their dreams, and their current presence information.
NOTE: the nonce is only good for one check and then it's invalidated.
App-Scoped IDs: To protect user privacy, users have a different ovrID across different applications. If you are caching them, make sure that you're also restricting them per application.