Cancel an alert

Cancel an active and scheduled alert.

{
    "version": "latest",
    "apiKey": "abcdefghijklmnopqrstuvwxyz",
    "cancel": [
        {
            "alertId": "f1a79b4c-15a2-4d9b-91ec-858afa63c8c5"
        },
        {
            "scheduledAlertId": "e1a79b4c-15a2-4d9b-91ec-858afa63c8c5"
        }
    ]
}