Creates a heartbeat

curl --request POST \
  --url https://api.rootly.com/v1/heartbeats \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/vnd.api+json' \
  --data '
{
  "data": {
    "type": "heartbeats",
    "attributes": {
      "name": "<string>",
      "alert_summary": "<string>",
      "interval": 123,
      "interval_unit": "minutes",
      "notification_target_id": "<string>",
      "notification_target_type": "User",
      "description": "<string>",
      "alert_description": "<string>",
      "alert_urgency_id": "<string>",
      "enabled": true
    }
  }
}
'

{
  "data": {
    "id": "650771b5-d441-4480-b4c6-8b94c26956d3",
    "type": "heartbeats",
    "attributes": {
      "slug": "api",
      "name": "API",
      "description": "This is a description",
      "alert_summary": "API is down",
      "alert_description": "Check the API logs and runbook at /docs/api-troubleshooting",
      "alert_urgency_id": "b56cdc61-7322-4b5d-a07e-95cc48291e04",
      "interval": 1,
      "interval_unit": "minutes",
      "notification_target_id": "224",
      "notification_target_type": "User",
      "ping_url": "http://localhost:3001/v1/heartbeats/650771b5-d441-4480-b4c6-8b94c26956d3/ping",
      "secret": "heartbeat_10fb566b3f48219fab3ff8f8c79616d54c7649a6bc326a7fe723c7b0476bbadb",
      "email_address": "[email protected]",
      "last_pinged_at": null,
      "expires_at": null,
      "enabled": false,
      "status": "waiting",
      "updated_at": "2026-01-03T21:27:11.980-08:00",
      "created_at": "2026-01-03T21:27:11.980-08:00"
    }
  }
}