Subscription Manager Subscribe [updated] (2026)

"subscription_id": "sub_xyz789", "status": "active", "current_period_start": "2026-04-14T00:00:00Z", "current_period_end": "2026-05-14T00:00:00Z", "next_invoice": 25.00

"subscriber_id": "usr_abc123", "plan_id": "plan_premium_monthly", "payment_method_id": "pm_card_visa", "trial_days": 0, "coupon_code": "WELCOME10" subscription manager subscribe