curl --request GET \
  --url https://api.example.com/admin/tenants/{id}/metrics \
  --header 'Authorization: Bearer <token>'

{
  "tenant_id": "<string>",
  "items": {
    "total": 123,
    "active": 123,
    "archived": 123,
    "trashed": 123
  },
  "blobs": {
    "count": 123,
    "total_size": 123
  },
  "recent_activity": [
    {
      "id": "<string>",
      "severity": "<string>",
      "summary": "<string>",
      "created_at": "<string>"
    }
  ],
  "generated_at": "<string>"
}