Retrieves a heartbeat

curl --request GET \
  --url https://api.rootly.com/v1/heartbeats/{id} \
  --header 'Authorization: Bearer <token>'

{
  "data": {
    "id": "0d303f95-4c7b-473d-8101-784264731989",
    "type": "heartbeats",
    "attributes": {
      "slug": "vero-soluta-sint-nulla",
      "name": "Vero soluta sint nulla.",
      "description": "Ab et nesciunt consequatur.",
      "alert_summary": "API is down",
      "alert_description": null,
      "alert_urgency_id": "a733a130-13f7-4c23-ba57-d4f720a8cb38",
      "interval": 1,
      "interval_unit": "minutes",
      "notification_target_id": "476",
      "notification_target_type": "User",
      "ping_url": "http://localhost:3001/v1/heartbeats/0d303f95-4c7b-473d-8101-784264731989/ping",
      "secret": "heartbeat_7baebe6ec419a0e4b5a384dfb71708a6c59923c25a501add555950cd48a9e337",
      "email_address": "[email protected]",
      "last_pinged_at": null,
      "expires_at": null,
      "enabled": false,
      "status": "waiting",
      "updated_at": "2026-02-05T01:49:13.690-08:00",
      "created_at": "2026-02-05T01:49:13.690-08:00"
    }
  }
}