ID of the registered device. Will be the same as the
corresponding parameter in the request, if one was specified.
Required if the inhibit_login option is false.
The lifetime of the access token, in milliseconds. Once
the access token has expired a new access token can be
obtained by using the provided refresh token. If no
refresh token is provided, the client will need to re-log in
to obtain a new access token. If not given, the client can
assume that the access token will not expire.