"avalara": {
  "endpoint": {
    "addressValidation": "/api/ext/avalara/addresses"
  }
}

"avalara": {
  "appName": "__APP_NAME__",
  "appVersion": "1.0",
  "environment": "sandbox",
  "machineName": "__MACHINE_NAME__",
  "credentials": {
    "username": "__USERNAME__",
    "password": "__PASSWORD__",
    OR
    "accountId": "__ACCOUNT_ID__",
    "licenseKey": "__LICENSE_KEY__",
    OR
    "bearerToken": "__BEARER_TOKEN__"
  }
}