The Video Skill API makes it clear that for some reason (that I assume is different than use cases for the Echo and Dot, though I can't see it) those video skills require implementation of OAuth. But with whom are we supposed to be validating user accounts? We (in my day job) are making video content but we don't have user accounts (and the business line is very intentionally steering away from that). What's our use case then for the API? Can we create a skill without user accounts?