{"test1":
  {"nodes":[
    {"radius":15,"weight":5,"group":0,"name":"node1"},
    {"radius":15,"weight":5,"group":1,"name":"node2"}],
  "links":[
    {"source":0,"target":1,"density":1,"strength":1,"distance":180}
    ]
  },
"test2":
  {"nodes":[
    {"radius":15,"weight":5,"group":0,"name":"node1"},
    {"radius":15,"weight":5,"group":1,"name":"node2"}],
  "links":[
    {"source":0,"target":1,"density":1,"strength":1,"distance":180}
   ]
  }
}