Thank you very much for the links.. but I have no idea how to unpack the data.

Could you (or anyone) explain what to do like I'm 5?
I've been able to access my bitfunder account and see the number of shares I have there...
You can't really be that helpless. Just use google. You also must have the private key to that address so you can sign the message. Which means you must have access to the wallet that has that address.