Changes to Update Subscription

added the new optional request property anyOf[subschema #1: SubscriptionUpdateBase]/metadata

the response's body type changed from object to no type for status 403

removed the required property detail from the response with the 403 status

removed the required property error from the response with the 403 status

added AlreadyCanceledSubscription InactiveSubscription to the response body anyOf list for the response status 403

added the required property customer/first_user_event_at to the response with the 200 status

added the required property discount/anyOf[subschema #1: SubscriptionDiscount]/oneOf[subschema #1: DiscountFixedOnceForeverDurationBase]/max_redemptions_per_customer to the response with the 200 status

added the required property discount/anyOf[subschema #1: SubscriptionDiscount]/oneOf[subschema #2: DiscountFixedRepeatDurationBase]/max_redemptions_per_customer to the response with the 200 status

added the required property discount/anyOf[subschema #1: SubscriptionDiscount]/oneOf[subschema #3: DiscountPercentageOnceForeverDurationBase]/max_redemptions_per_customer to the response with the 200 status

added the required property discount/anyOf[subschema #1: SubscriptionDiscount]/oneOf[subschema #4: DiscountPercentageRepeatDurationBase]/max_redemptions_per_customer to the response with the 200 status