curl --request POST \
--url https://api.sandbox.co.in/gst/compliance/e-way-bill/tax-payer/authenticate \
--header 'Authorization: <authorization>' \
--header 'Content-Type: application/json' \
--header 'x-api-key: <x-api-key>' \
--data '
{
"username": "ACME_IND_API_QCK",
"password": "QnVzaW5lc3NfQVBJX1FDSw",
"gstin": "29AAACQ3770E000"
}
'