Manage a subscription.

Use this API to manage subscriptions. You can cancel, pause, activate, or change the plan associated with a subscription. To update the recurring amount for a periodic subscription, create a new plan with the revised amount, and then use the Manage Subscription API to associate the subscription with the new plan. Include the CHANGE_PLAN action and the new plan ID in the request body.

Customers will not be notified about the restructuring. The charge amount cannot exceed the maximum amount defined in the original plan.

Please note that the CHANGE_PLAN and PAUSE actions are not supported for On-Demand Subscriptions.