HTTP/1.1 400 Bad Request
Content-Type: application/json; charset=utf-8
X-Ua-Compatible: IE=Edge
Cache-Control: no-cache
X-Request-Id: b434ca28f6241d107aaeac961c8aa225
X-Runtime: 0.323214
Server: WEBrick/1.3.1 (Ruby/1.9.3/2013-02-22)
Date: Sun, 08 Sep 2013 08:53:39 GMT
Content-Length: 133
Connection: Keep-Alive

{
  "error": {
    "type": "invalid_request_error",
    "message": "Missing required param: currency",
    "param": "currency"
  }
}
