Retrieves a heartbeat

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

{
  "data": {
    "id": "e3258fc2-6535-4753-9a11-a030eff8a9ed",
    "type": "heartbeats",
    "attributes": {
      "slug": "dolor-est-rerum-error",
      "name": "Dolor est rerum error.",
      "description": "Laudantium officia rem dolor.",
      "alert_summary": "API is down",
      "alert_description": null,
      "alert_urgency_id": "3a78d3ef-f8a1-4447-8802-865461b12434",
      "interval": 1,
      "interval_unit": "minutes",
      "notification_target_id": "476",
      "notification_target_type": "User",
      "ping_url": "http://localhost:3001/v1/heartbeats/e3258fc2-6535-4753-9a11-a030eff8a9ed/ping",
      "secret": "heartbeat_d4e86a5fd1139acbcc0e731eec39c2990a03c1f97c5f32511fab534601dafa0f",
      "email_address": "[email protected]",
      "last_pinged_at": null,
      "expires_at": null,
      "enabled": false,
      "status": "waiting",
      "updated_at": "2026-01-31T09:16:18.798-08:00",
      "created_at": "2026-01-31T09:16:18.798-08:00"
    }
  }
}