Indicates whether the email has been verified or not.
The server can return _id, id or user_id depending on various factors.
For convenience we expose it here as just id.
OptionalusernameUsername of this user.
Optionalgiven_The user's given name(s).
Optionalfamily_The user's family name(s).
OptionalnameThe user's full name.
OptionalnicknameThe user's nickname.
OptionalpictureA URI pointing to the user's picture.
Optionaluser_The user metadata to be associated with the user. If set, the field must be an object containing no more than ten properties. Property names can have a maximum of 100 characters, and property values must be strings of no more than 500 characters.
Email address of the new user.