Retrieves a heartbeat

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

{
  "data": {
    "id": "f27890fa-2fcf-4f07-bca5-c07b38e99fb9",
    "type": "heartbeats",
    "attributes": {
      "slug": "quasi-quo-quia-asperiores",
      "name": "Quasi quo quia asperiores.",
      "description": "Est dolorem nisi sed.",
      "alert_summary": "API is down",
      "alert_description": null,
      "alert_urgency_id": "a009a5c8-a422-4af2-b62f-2ee3807b5f0c",
      "interval": 1,
      "interval_unit": "minutes",
      "notification_target_id": "476",
      "notification_target_type": "User",
      "ping_url": "http://localhost:3001/v1/heartbeats/f27890fa-2fcf-4f07-bca5-c07b38e99fb9/ping",
      "secret": "heartbeat_270437f4b1311f4460352e0f82cb42fa660a86bd15869c0c8c71aeedfc06288e",
      "email_address": "[email protected]",
      "last_pinged_at": null,
      "expires_at": null,
      "enabled": false,
      "status": "waiting",
      "updated_at": "2026-02-06T19:26:35.212-08:00",
      "created_at": "2026-02-06T19:26:35.212-08:00"
    }
  }
}