curl --request GET \
  --url https://api.example.com/api/v2/external/billing/invoices

{
  "invoices": [
    {
      "id": "<string>",
      "created_at": "2023-11-07T05:31:56Z",
      "amount": 123,
      "credits": 123,
      "status": "<string>",
      "invoice_pdf": "<string>",
      "receipt_url": "<string>",
      "payment_intent_id": "<string>"
    }
  ],
  "total_invoices": 123
}