The language the user specified at login. If the app supports that language, it should render its labels in that language. Format: two lowercase alpha characters. Examples: 'en', 'fr', 'sq'.
The time zone the user specified at login. Where applicable, the app should display its date fields using that time zone. Format: TZ database names in the form "Area/Location", e.g. "America/New_York" as specified by the TZDB group. See https://en.wikipedia.org/wiki/List_of_tz_database_time_zones from more examples.
The human-readable name of the user currently logged in.
email of user account if available