{
    "hubs": [
      { "id": "hub2",
        "primaryBroker": "brokerA",
        "secondaryBroker": "brokerB",
        "name": "Broker hub 2",
        "parentId": "hub1"
      },
      { "id": "hub1",
        "primaryBroker": "brokerX",
        "secondaryBroker": "brokerY",
        "name": "Broker hub 1"
      }
    ],
    "brokers": [
      { "id": "brokerA",
        "hostname": "brokerA",
        "port": "8884",
        "altHostname": "192.168.0.10"
      },
      { "id": "brokerB",
        "hostname": "brokerB",
        "port": "8885",
        "altHostname": "192.168.0.10"
      },
      { "id": "brokerX",
        "hostname": "brokerX",
        "port": "8888",
        "altHostname": "192.168.0.10"
      },
      { "id": "brokerY",
        "hostname": "brokerY",
        "port": "8889",
        "altHostname": "192.168.0.10"
      }
    ]
}