{
   "merchant_id": "test_merchant_id",
   "access_key": "test_access_key",
   "secret_key": "test_secret_key",
   "currency_code": "USD",
   "client_id": "test_client_id",
   "region": "us",
   "sandbox": "false",
   "application_name": "sdk testing",
   "application_version": "1.0",
   "proxy_host": null,
   "proxy_port": -1,
   "proxy_username": null,
   "proxy_password": null
}