{
  "success": true,
  "data": [
    {
      "id": "center_456",
      "name": "서초센터",
      "tenantType": "CENTER",
      "status": "ACTIVE"
    }
  ]
}

{
  "success": true,
  "data": {
    "id": "center_456",
    "name": "서초센터",
    "tenantType": "CENTER",
    "status": "ACTIVE",
    "settings": { ... },
    "memberCount": 45
  }
}

{
  "name": "새 센터",
  "tenantType": "CENTER",
  "vertical": "rehabilitation",
  "adminEmail": "admin@newcenter.com"
}

{
  "success": true,
  "data": {
    "totalCenters": 12,
    "totalMembers": 540,
    "activeToday": 230,
    "revenue": { ... }
  }
}