post https://{{subdomain}}.supercast.com/api/v1/subscribers
Create a new Subscriber, or reactivate a cancelled subscription
Call this API endpoint when you want to activate a feed in Supercast for a subscriber.
If the subscriber has never been created before, they'll be created in your account.
This can be also be called even when a subscriber already exists to ensure that their feed is active, or to reactivate a feed that you've created in the past.