1[
2  {
3    "id" : "actor-1",
4    "type" : "ClutterActor",
5    "margin" : [ 10 ]
6  },
7  {
8    "id" : "actor-2",
9    "type" : "ClutterActor",
10    "margin" : [ 10, 20 ]
11  },
12  {
13    "id" : "actor-3",
14    "type" : "ClutterActor",
15    "margin" : [ 10, 20, 30 ]
16  },
17  {
18    "id" : "actor-4",
19    "type" : "ClutterActor",
20    "margin" : [ 10, 20, 30, 40]
21  }
22]
23