Subscriptions are special shop offers (coming in GET /shopoffers response) that have the value
"Subscription" in the parameter
"Type". They are purchased the first time (see Shop section to know how to purchase), a reward is given and it is automatically renewed after a month, charging the user with new payment and giving the reward again.
The API provides a couple of methods to deal with Subscriptions:
Multi-User Subscriptions are a kind of subscription that can be used by several users. The way to distinguish this type of subscription is through parameter
Subscriptions array in GET /user response once the subscription has been purchased. Note that the subscription object that contains this parameter is only present for the owner of the subscription.