get https://api.revolv3.com/api/Subscriptions
Retrieve subscriptions for a merchant with a status code of 200 (OK).
Additionally, an optional filter Merchant Subscription Ref ID can be used to narrow results.
If no matching subscriptions exist for the merchant, a status code of 204 (No Content) will be returned.
If the Customer ID cannot be associated with an active subscription, a status code of 204 will be returned.
If the provided Customer ID does not exist, a status code of 404 (Not Found) will be returned.