Retrieves a heartbeat

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

{
  "data": {
    "id": "03b42958-45e8-4837-a379-34d2057e4974",
    "type": "heartbeats",
    "attributes": {
      "slug": "ex-et-labore-ducimus",
      "name": "Ex et labore ducimus.",
      "description": "Non maxime veritatis eligendi.",
      "alert_summary": "API is down",
      "alert_description": null,
      "alert_urgency_id": "b387f017-4cef-47c4-8128-397848856465",
      "interval": 1,
      "interval_unit": "minutes",
      "notification_target_id": "476",
      "notification_target_type": "User",
      "ping_url": "http://localhost:3001/v1/heartbeats/03b42958-45e8-4837-a379-34d2057e4974/ping",
      "secret": "heartbeat_40083c8fbfaacc75a2f63a38ad3f5725a81c859557194a7ef7ce6c1256842cc0",
      "email_address": "[email protected]",
      "last_pinged_at": null,
      "expires_at": null,
      "enabled": false,
      "status": "waiting",
      "updated_at": "2026-02-04T08:19:52.878-08:00",
      "created_at": "2026-02-04T08:19:52.878-08:00"
    }
  }
}