Subscription Created

Event Type	Description
`Subscription.created`	A new subscription has been created and provides the details.

{
        "id": "event_4da42927-77f5-4308-a6bf-60c1ed0a4b24",
        "type": "subscriptions.created",
        "timestamp": "2019-01-09T12:14:44.155187291Z",
        "payload": {
            "subscriptionID": "",
            "transaction": "",
            "planID": "",
            "planName": "",
            "interval": "",
            "intervalCount": "",
            "amount": "",
            "currency": "",
            "paymentSource": "",
            "created":"2019-09-26T21:19:03.890Z",
            "statusMessage": "Pending",
            "userID": "30b250c6-8e85-40e0-937f-0b0689691b38",
            "accountID": "30b250c6-8e85-40e0-937f-0b0689691b38.1569532274142"
        }
}