Yes sure.
curl -X GET 'https://hooks.slack.com/services/TXXXXXXXX/BXXXXXXXX/XXXXXXXXXXXX?message=%7B%22check%22%3A%20%2200000%22%2C%20%22checkname%22%3A%20%22Test%29%22%2C%20%22host%22%3A%20%22Test%22%2C%20%22action%22%3A%20%22assign%22%2C%20%22incidentid%22%3A%200000%2C%20%22description%22%3A%20%22down%22%7D'
With this curl (Replace the X with your Webhook) do I get this output in Slack:
