API connector: returned data as parameter for next API call

API connector (agent flow / facebook graph):

How can I make a second api call that can get previous call ‘returned data’ as parameter? in this case facebook user “id” … exemple: fb.com/v2.8/me returns id:24437457, I want to use this as a parameter for my next call (which will be a bubble wf).
Note this is Oauth 2.0 based.