The SubscriptionState can be one of:
| Constant | Description | 
|---|---|
Enums. | (-1) Subscription state is unknown. | 
Enums. | (0) Subscription is active and allows all functionality. | 
Enums. | (1) Subscription was canceled. | 
Enums. | (2) Subscription was deleted. | 
Enums. | (3) Subscription has expired. | 
Enums. | (4) Subscription has run out of credits. | 
Enums. | (5) Subscription was suspended. |