Changes to Get Subscription

the response property subscription/cancellation_reason became nullable for the status 200

the response property subscription/cancelled_at became nullable for the status 200

the response property subscription/current_period_end became nullable for the status 200

the response property subscription/current_period_start became nullable for the status 200

the response property subscription/deleted_at became nullable for the status 200

the response property subscription/expired_at became nullable for the status 200

the response property subscription/external_customer_id became nullable for the status 200

the response property subscription/external_id became nullable for the status 200

the response property subscription/gateway became nullable for the status 200

the response property subscription/last_renewal_reminder_at became nullable for the status 200

the response property subscription/metadata became nullable for the status 200

the response property subscription/open_renewal_invoice_id became nullable for the status 200

the response property subscription/payment_method_id became nullable for the status 200

the response property subscription/recurring_price_usd became nullable for the status 200

the response property subscription/suspended_at became nullable for the status 200

the response property subscription/trial_ends_at became nullable for the status 200

removed the optional property subscription/product/stock_count from the response with the 200 status