curl --request GET \
  --url https://api.example.com/api/v1/checkout-sessions \
  --header 'Authorization: Bearer <token>'

{
  "sessions": [
    {
      "checkout_type": "SELF_SERVE",
      "created_at": "2023-11-07T05:31:56Z",
      "customer_id": "<string>",
      "id": "<string>",
      "plan_version_id": "<string>",
      "status": "CREATED",
      "billing_day_anchor": 123,
      "billing_start_date": "2023-12-25",
      "checkout_url": "<string>",
      "completed_at": "2023-11-07T05:31:56Z",
      "coupon_code": "<string>",
      "expires_at": "2023-11-07T05:31:56Z",
      "net_terms": 123,
      "payment_methods_config": {
        "type": "online",
        "config": {
          "card": {
            "enabled": true
          },
          "direct_debit": {
            "enabled": true
          }
        }
      },
      "subscription_id": "sub_7n42DGM5Tflk9n8mt7Fhc7",
      "trial_duration_days": 123
    }
  ]
}