Is there a way to get actual user ID via Amazon login?

Following this manual http://ift.tt/1Q5a3wq I was able to get user ID which as I understand is an unique for my application/user. This ID has following format: "amzn1.account.XXXXXXXXXXXXXXXXXXXXXXXXXXXX".

But I want to somehow get a link to user profile which looks like "http://ift.tt/1LPFZX8".

Is there any way to achieve this?