curl --request GET \
  --url https://app.blinksale.test/api/v1/invoices/{invoiceId}/pdf \
  --header 'Authorization: Bearer <token>'

{
  "success": true,
  "message": "PDF URL retrieved successfully",
  "data": {
    "url": "https://app.blinksale.com/storage/pdf/invoices/01jtdvk0x6b15czqzggns2nvf1.pdf"
  }
}