Let's say I had a "hugging" application that would let you say when you hugged one of your friends. What's the best way to set up the "person" object who receives the hugging action?
Ex: "hug" action -> "person" object - "George hugged Suzy"
The profile object seems like the best match, but doesn't seem to apply to facebook profile pages.
It doesn't look like there is any suitable built-in Open Graph object type for a "person," and the profile type you found is for external profiles.
You may try this one: http://ogp.me/#type_profile and http://ogp.me/ns/fb#profile_id the profile_id might do the trick.