[
  {
    "id" : 0,
    "child_ids" : [
      1,
      2
    ],
    "attributes": {
      "label" : "Node-0"
    }
 },
 {
    "id" : 1,
    "child_ids" : [
      3,
      4
    ],
    "attributes": {
      "label" : "Node-1"
    }
 },
 {
    "id" : 2,
    "child_ids" : [
      5,
      6
    ],
    "attributes": {
      "label" : "Node-2"
    }
 },
 {
    "id" : 3,
    "child_ids" : [
      7,
      8
    ],
    "attributes": {
      "label" : "Node-3"
    }
 },
 {
    "id" : 4,
    "child_ids" : [
      0,
      9,
      10
    ],
    "attributes": {
      "label" : "Node-4"
    }
 },
 {
    "id" : 5,
    "child_ids" : [
      11,
      12
    ],
    "attributes": {
      "label" : "Node-5"
    }
 },
 {
    "id" : 6,
    "child_ids" : [
      4,
      13,
      14
    ],
    "attributes": {
      "label" : "Node-6"
    }
 },
 {
    "id" : 7,
    "child_ids" : [
      15
    ],
    "attributes": {
      "label" : "Node-7"
    }
 },
 {
    "id" : 8,
    "child_ids" : [
    ],
    "attributes": {
      "label" : "Node-8"
    }
 },
 {
    "id" : 9,
    "child_ids" : [
    ],
    "attributes": {
      "label" : "Node-9"
    }
 },
 {
    "id" : 10,
    "child_ids" : [
    ],
    "attributes": {
      "label" : "Node-10"
    }
 },
 {
    "id" : 11,
    "child_ids" : [
    ],
    "attributes": {
      "label" : "Node-11"
    }
 },
 {
    "id" : 12,
    "child_ids" : [
    ],
    "attributes": {
      "label" : "Node-12"
    }
 },
 {
    "id" : 13,
    "child_ids" : [
    ],
    "attributes": {
      "label" : "Node-13"
    }
 },
 {
    "id" : 14,
    "child_ids" : [
    ],
    "attributes": {
      "label" : "Node-14"
    }
 },
 {
    "id" : 15,
    "child_ids" : [
    ],
    "attributes": {
      "label" : "Node-15"
    }
 }
]