I watched the first part where you had to give your access token even though it would have nothing to do with searching the graph API or have any other way of getting information from a non related FB page, that was all I need to watch.Sam, if this script is real it would allow us to create custom audiences from any group on FB. Worth a watch.
You a geniishttps://graph.facebook.com/v2.10/act_283753311691627/saved_audiences?access_token="your access token"