payment.subscription

周期订阅的创建、读取、取消与延长。

• payment.subscription.renewal
• NATSpayment.subscription.cancel - 取消订阅
• NATSpayment.subscription.create - 创建订阅
• NATSpayment.subscription.extend - 延长订阅
• NATSpayment.subscription.get - 读取订阅