Java integration
curl \
-u "$API_USER:$API_PASS" \
https://api.nexmo.com/accounts/{api_key}/subaccountscurl \
-u "$API_USER:$API_PASS" \
https://api.nexmo.com/accounts/{api_key}/credit-transferscurl \
-u "$API_USER:$API_PASS" \
https://api.nexmo.com/accounts/{api_key}/balance-transfers