checkout.session.json

{
  "id": "cs_test_xxx",
  "object": "checkout.session",
  "amount_subtotal": 2100,
  "amount_total": 2499,
  "cancel_url": "https://example.com/cancel",
  "client_reference_id": null,
  "currency": "usd",
  "customer": "cus_yyy",
  "livemode": false,
  "mode": "subscription",
  "payment_method_types": [
    "card"
  ],
  "subscription": "sub_zzz",
  "success_url": "https://example.com/success",
  "total_details": {
    "amount_discount": 0,
    "amount_tax": 399
  }
}