Retrieves a heartbeat

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

{
  "data": {
    "id": "d049c73e-ef6f-412f-8511-221798c38cf9",
    "type": "heartbeats",
    "attributes": {
      "slug": "molestiae-necessitatibus-consectetur-rerum",
      "name": "Molestiae necessitatibus consectetur rerum.",
      "description": "Aut illo commodi sequi.",
      "alert_summary": "API is down",
      "alert_description": null,
      "alert_urgency_id": "cd861814-f1a4-411e-a9dc-2e3d4e9cadf6",
      "interval": 1,
      "interval_unit": "minutes",
      "notification_target_id": "476",
      "notification_target_type": "User",
      "ping_url": "http://localhost:3001/v1/heartbeats/d049c73e-ef6f-412f-8511-221798c38cf9/ping",
      "secret": "heartbeat_53427ccbf1ca92b2399b78c400962162ab53f112df5f9a8f5fbaac2ae37bafdc",
      "email_address": "[email protected]",
      "last_pinged_at": null,
      "expires_at": null,
      "enabled": false,
      "status": "waiting",
      "updated_at": "2026-02-01T18:04:05.086-08:00",
      "created_at": "2026-02-01T18:04:05.086-08:00"
    }
  }
}