Stable application user identifier stored as the Mongo profile key (compatibility alias retained as userId).
OptionalnameSign-in method; set on every profile at creation.
Profile creation timestamp in ISO 8601 string format, sourced from Mongo document creation time.
Profile update timestamp in ISO 8601 string format, sourced from Mongo document update time.
OptionalplatformPer-platform upload defaults stored on the profile (platformDefaults; profile GET/PATCH today).
OptionalpreferencesCross-device UI preferences (profile GET/PATCH).
Defines the shape of user.