I am sure you want to use this for your custom audience feature. I came across this Facebook Open Graph Scraper on the web - youtubedotcom/watch?v=btSebYnl1nQ Haven't used it myself but if it does what it says then you could specifically scrape those UIDs.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.