curl --request GET \
  --url https://api.myrouter.example/api/v1/billing/checkout/sessions/{session_id} \
  --header 'Authorization: Bearer <token>'

{
  "data": {
    "id": "<string>",
    "url": "<string>",
    "status": "<string>",
    "payment_status": "<string>",
    "amount_total": "<string>",
    "currency": "<string>"
  },
  "request_id": "<string>"
}