webhookId (required) - A WEBHOOK ID obtained from a provider.
appId (required) - The APP ID of your application returned from the api call in Step 1.
url (required) - A url you wish to be called when the webhook is activated.
filters (optional) - Your url will be called only when the webhook is activated with a filter value that exists in your filters list. If you don’t provide anything for this field, your url will be called every time the webhook is activated.