{
  "app": {
    "package" : "my_app",
    "abc" : {
      "title" : "description for abc field",
      "value" : "value of abc"
    }
  },
  "a": {
    "a1": {
      "title": "description for a1 field",
      "value": "value of a1"
    },
    "b": {
      "b1": {
        "title": "description for b1 field",
        "value": "value of b1"
      }
    }
  }
}