HTTP/1.1 422 Unprocessable Entity
Cache-Control: no-cache
Content-Type: application/json; charset=utf-8
Date: Fri, 15 Feb 2013 15:54:18 GMT
Server: Apache/2.2.20 (Ubuntu)
Status: 422
Strict-Transport-Security: max-age=31536000
Vary: User-Agent
X-Powered-By: Phusion Passenger (mod_rails/mod_rack) 3.0.11
X-Rack-Cache: invalidate, pass
X-Request-Id: 293436e475bfc6face410e6ed241efe9
X-Runtime: 0.161746
X-UA-Compatible: IE=Edge,chrome=1
Content-Length: 152
Connection: keep-alive

{"error":"invalid_resource","error_description":"One or more parameters were missing or invalid","messages":[{"param":"email","code":"email_invalid","message":"Email can't be blank"},{"param":"email","code":"email_invalid","message":"Email is not formatted properly"}]}