title: Convert JSON AnyObject to Int64
body: <p>this is somewhat related to this question: <a href="https://stackoverflow.com/questions/25874287/how-to-properly-store-timestamp-ms-since-1970">How to properly store timestamp (ms since 1970)</a></p>
  
  <p>Is there a way to typeCast a AnyObject to Int64? I am receiving a huge number via JSON this number arrives at my class as "AnyObject" - how can I cast it to Int64 - xcode just says its not possible. </p>