curl --request POST \
  --url https://api.sandbox.co.in/gst/compliance/e-way-bill/tax-payer/authenticate \
  --header 'Content-Type: application/json' \
  --header 'authorization: <api-key>' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "username": "{{irp_ewb_username}}",
  "password": "{{irp_ewb_password}}",
  "gstin": "{{irp_ewb_gstin}}"
}
'

{
  "code": 200,
  "data": {
    "Status": 1,
    "access_token": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiJ0YXhwYXllci1zZXNzaW9uIiwiZ3N0aW4iOiIyNEFCS0NTMjAzM0IxWlYiLCJpYXQiOjE3MTI5NDQxMDAsImV4cCI6MTcxMjk0NzcxMX0.sandbox-signature",
    "expiry": 1714157100000
  },
  "timestamp": 1763446641000,
  "transaction_id": "2ab9923e-f844-4b6c-8fc7-0bcc767bafc7"
}