I thought i'd wait and see if we got more data deletion requests, but we haven't.
I couldn't match any of the IDs given with any contact in our system.
My guess is that these data deletion requests are for any facebook users that has interacted with our page at any point, and not necessarily someone who has messaged our page and been added to D.T through the Facebook integration.
Ideally the facebook plugin would have a way to paste in the IDs and have it search if any contacts exist. This would be a manual process.
Then you'd have to determine if you need to delete the contact. I think this data request would just be deleting facebook conversations and associated data. It would not necessarily mean deleting the contact and all conversations and notes outside or after the facebook conversation. I'm not certain though.