curl --location --request POST 'https://api.b2b.net.tr/login' \
--header 'Content-Type: application/json' \
--data-raw '{
"login": {
"firmakodu": "ABC123",
"apikey": "eaXYZbMhB5GJPh5XmtTdg2muHmukvwDX",
"secretkey": "tAm7dMJk6n2oPtsHxoEjZ7YEHp9NEP5r"
}
}'
{}