invoice_az/invoice asan.txt

{
  "type": "send",
  "invoiceIds": [
    "b7bd1f20-4bdb-4e7b-bf18-c1f9bdbbb366"
  ]
}

https://new.e-taxes.gov.az/api/po/invoice/public/v1/invoice/sign/withAsanImza

{"status":"ok","error":null,"verificationCode":"4147"}