curl --location --request POST 'http://dev-cn.your-api-server.com/v2/webhooks' \
--header 'Authorization: $API_KEY' \
--header 'Content-Type: application/json' \
--data-raw '{"url": "https://webhook.site/1234-...", "events": ["video.completed"]}'
{
(Webhook object fields),
"secret":"1234-..."
}