EY has already convinced me that he'll put effort into getting everyone who's frozen revived once it's possible, and in the process has given me hope that there are good people out there who'll do that simply because they want to. In return I've resolved that if I am revived, I will also do what I can to ensure that everyone else who can be revived, is. I'd be kinda surprised if this isn't a common sentiment among most cryo-patients. So I'm not sure there's any need for specific one-on-one agreements to revive. Help to revive everyone.

That being said, probably the best way to get other people to care about your revival specifically is to become important to them. Therefore - convince your close friends, lovers, and family to get suspended. Alternately, become semi-famous so strangers will be interested in you too. But the friends/family route is easiest, helps to keep more people alive into the future, signals caring, and will start you out with a ready-made social network in the future!