I just do it for amusement, I did it when I closed my Facebook account like 6+ years ago, whereas it included things like: anything deleted, any like/dislike, friend/unfriend, any RSVP action on any event and any check-in, facial recognition data, etc.
Just recently deleted my Twitch account, while doing an export beforehand and: Twitch is pretty much an advertising company marketed as a streaming site. Pretty much every action is recorded, and with a [datetime, IP address, GeoIP, ASN] tuple on nearly single action, even logging things like EACH INDIVIDUAL MINUTE WATCHED of a VOD or stream, etc. Every pageview, and referrer URL, down to looking between the profile page, schedule page, and such of an account, etc.