| Name | Type | Description | Notes |
|---|---|---|---|
| basic_authentication | \Bandwidth\Model\TfvBasicAuthentication | [optional] | |
| callback_url | string | Callback URL to receive status updates from Bandwidth. When a webhook subscription is registered with Bandwidth under a given account ID, it will be used to send status updates for all requests submitted under that account ID. | |
| shared_secret_key | string | An ASCII string submitted by the user as a shared secret key for generating an HMAC header for callbacks. | [optional] |