[{
  "id": 1,
  "text": "Root",
  "icon": "fa fa-cloud text-warning",
  "state": {"opened": true},
  "children": [{
    "id": 2,
    "text": "Twitter",
    "icon": "fab fa-twitter-square text-twitter",
    "children": [{
      "id": 3,
      "text": "Sub node",
      "icon": "fa fa-male"
    }, {
      "id": 4,
      "text": "Sub node",
      "icon": "fa fa-female"
    }, {
      "id": 5,
      "text": "Sub node",
      "icon": "fa fa-hashtag"
    }]
  }, {
    "id": 6,
    "text": "Trello",
    "icon": "fab fa-trello",
    "state": {"disabled": true}
  }, {
    "id": 7,
    "text": "Facebook",
    "icon": "fab fa-facebook-square text-facebook",
    "children": [{
      "id": 8,
      "text": "Sub node",
      "icon": "fa fa-heart",
      "state": {"disabled": true}
    }, {
      "id": 9,
      "text": "Sub node",
      "icon": "fa fa-comment"
    }]
  }, {
    "id": 10,
    "text": "Google+",
    "icon": "fab fa-google-plus-square text-google-plus",
    "state": {"opened": true},
    "children": [{
      "id": 11,
      "text": "Sub node",
      "icon": "fa fa-fire",
      "children": [{
        "id": 12,
        "text": "Grand sub node",
        "icon": "fa fa-envelope-open",
        "children": [{
          "id": 13,
          "text": "Another sub node",
          "icon": "fa fa-heart"
        }]
      }]
    }, {
      "id": 14,
      "text": "Sub node",
      "icon": "fa fa-star"
    }]
  }, {
    "id": 15,
    "text": "Github",
    "icon": "fab fa-github"
  }]
}]