Subscription

{
    "id": "sub_001",
    "mailboxId": "mbx_001",
    "userId": "usr_abc123",
    "status": "ACTIVE",
    "billingCycle": "MONTHLY",
    "price": 3,
    "nextBillingDate": "2019-08-24T14:15:22.123Z",
    "autoRenewal": true,
    "createdAt": "2019-08-24T14:15:22.123Z"
}