This method is both used as verification during input, as well as the
final registration.
+Razer Forge TV uses `POST https://devs.ouya.tv/api/razer/gamer`_ instead.
+
Usage
=====
HTTP response
=============
+..note:: Does not support HTTP redirects!
+
Success
-------
When everything is ok and the user has been registered
(or the data were valid when ``dryrun`` was set)
Status code
- ``200 OK``
+ ``200 OK``
Content type
``application/json; charset=utf-8``
Response body