{
  "directors": [
    {
      "port": 8000,
      "receivers": [
        {
          "host": "192.168.1.1",
          "port": 20000
        }, {
          "host": "192.168.1.2",
          "port": 30000
        }
      ]
    }, {
      "port": 2000,
      "receivers": [
        {
          "host": "192.168.1.3",
          "port": 40000
        }
      ]
    }, {
      "port": 4000,
      "receivers": [
        {
          "host": "192.168.1.4",
          "port": 50000
        }
      ]
    }
  ]
}