Creates a new AlertWebhook object.
Access is permitted when any of the following condition(s) are met: 1. The signed-in User has any of the following permissions for the associated Organization: [org_manage_instances].
|The name of the AlertWebhook.|
|The URL of the AlertWebhook.|
|The template that is hydrated and then used as the body of the AlertWebhook request.|
|A JSON string of key/value pairs that will be sent as headers in the Webhook request.|
|A unique identifier for the client performing the mutation.|