{
"nodes":[
  {"node":0, "name":"Source 1"},
  {"node":1, "name":"Source 2"},
  {"node":2, "name":"First Level Distribution"},
  {"node":3, "name":"Second Level Distribution 1"},
  {"node":4, "name":"Terminus 1"},
  {"node":5, "name":"Terminus 2"},
  {"node":6, "name":"Second Level Distribution 2"},
  {"node":7, "name":"Source 3"}
],
"links":[
  {"source":0, "target":2, "value":6},
  {"source":0, "target":4, "value":2},

  {"source":1, "target":2, "value":4},
  {"source":1, "target":3, "value":2},
  {"source":1, "target":6, "value":1},
  
  {"source":2, "target":3, "value":5},
  {"source":2, "target":4, "value":3},
  {"source":2, "target":6, "value":2},
  
  {"source":3, "target":4, "value":4},
  {"source":3, "target":5, "value":4},

  {"source":6, "target":5, "value":5},
  {"source":7, "target":6, "value":2},
  {"source":7, "target":3, "value":1}
] }