title: Facebook Messenger Bot
body: <p>I have question about FB messenger bot, any help would be apriciated!
  I have a web application where we have FB login which gives us information about user and FB ID.</p>
  
  <p>FB messenger also gives us an ID, but it's different from FB ID and I cannot find any connection between those 2.</p>
  
  <p>Do we have a way to identify FB user by Messenger ID?
  Thanks!</p>