Starts a subscription upgrade order for the specified subscription and order IDs. This endpoint is used to initiate an upgrade order and trigger the upgrade lifecycle with the newly added / removedbricks. It validates the order is ready to start and processes payment if required.
API key for authentication
Whether to attempt an immediate charge for the upgrade order.
no, yes Common subscription response serializer that includes the ID of the subscription from the result of a subscription related operation.
ID of the subscription