Retrieves a heartbeat

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

{
  "data": {
    "id": "2b19c0e3-bd85-428a-84e3-b93a0c656040",
    "type": "heartbeats",
    "attributes": {
      "slug": "sed-quae-ipsum-deserunt",
      "name": "Sed quae ipsum deserunt.",
      "description": "Dolorem dicta aut incidunt.",
      "alert_summary": "API is down",
      "alert_description": null,
      "alert_urgency_id": "367d79be-d683-4582-9b57-d9d34b02579a",
      "interval": 1,
      "interval_unit": "minutes",
      "notification_target_id": "500",
      "notification_target_type": "User",
      "ping_url": "http://localhost:3001/v1/heartbeats/2b19c0e3-bd85-428a-84e3-b93a0c656040/ping",
      "secret": "heartbeat_00176ebb25a4ce3ef176c499a4f51ab920dd489364a3ccc21e434b496ac1d6a8",
      "email_address": "[email protected]",
      "last_pinged_at": null,
      "expires_at": null,
      "enabled": false,
      "status": "waiting",
      "updated_at": "2026-02-10T22:23:51.790-08:00",
      "created_at": "2026-02-10T22:23:51.790-08:00"
    }
  }
}