Sample Response Header

Content-Location: https://api.yesmail.com/v2/subscribers/jsmith%40zzz.com
Content-Type: application/json
Date: 2013-03-01T14:56:01Z
Expires: 2013-03-01T14:56:01Z
Last-Modified: 2013-02-01T12:25:15Z
Link: ; rel="subscriptions"