Customer portal

curl https://api.stripe.com/v1/billing_portal/sessions \ -u sk_test_51JfnGpHg483XAXBVXyAWTHto1LK1A8gcENClz1T4THAeUKI25cMg9Ae17XDYVzIWd7EyyNIUCyDa7PQSWPrTa7x700NNIup6yc: \ -d "customer"="{{ CUSTOMER_ID }}" \ -d "return_url"="https://example.com/account"