I want to link our skill to our backend, but we only require an email for the link. Do I really need to spin up a full OAuth Process for this or can I just 1) enable linking for my skill, 2) create a login with only email entry, 3) pass back our unique ID for the user. I see the Campbells soup skill only requires email, but its really only for sending recipe to the user. I want to do that as well. Is a full OAuth Arch required for something so simple?