Retrieves a heartbeat

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

{
  "data": {
    "id": "8711fad4-3111-4fac-857f-844a73b05caf",
    "type": "heartbeats",
    "attributes": {
      "slug": "ipsam-sapiente-quia-soluta",
      "name": "Ipsam sapiente quia soluta.",
      "description": "Ipsum labore sed amet.",
      "alert_summary": "API is down",
      "alert_description": null,
      "alert_urgency_id": "be5e7b18-60e3-4686-9de4-cf0ba8eaf945",
      "interval": 1,
      "interval_unit": "minutes",
      "notification_target_id": "476",
      "notification_target_type": "User",
      "ping_url": "http://localhost:3001/v1/heartbeats/8711fad4-3111-4fac-857f-844a73b05caf/ping",
      "secret": "heartbeat_6d5239cc18b67d45c986d6fa03fbf12850fd9426f9328c4b3fc5c3de9680278c",
      "email_address": "[email protected]",
      "last_pinged_at": null,
      "expires_at": null,
      "enabled": false,
      "status": "waiting",
      "updated_at": "2026-02-03T07:36:46.603-08:00",
      "created_at": "2026-02-03T07:36:46.603-08:00"
    }
  }
}