I know that's the package name.
This pic shows whats inside the package.
https://imgur.com/YLTYyFu
Package Name: Complimentary Reviewer Package
Contents:
Game - Occult Raise - No Price 3 days ago
670580 DLC Melina (Character for Occult Raise)
670581 DLC Mia (Character for Occult Raise)
670582 DLC Maria (Character for Occult Raise)
670583 DLC Nina (Character for Occult Raise)
670584 DLC Tetsu (Character for Occult Raise)
670590 DLC Alexander (Character for Occult Raise)
670591 DLC Koji (Character for Occult Raise)
670592 DLC Daedalus (Character for Occult Raise)
As you can you it contains Occult Raise and 8 DLC for it.

If you activated the key try checking here.
https://store.steampowered.com/account/licenses/
By the way how did you know the Sub ID and the package name?