{
  "title":"Level 1",
  "children":[
    { "title":"Level 1.a" },
    { "title":"Level 1.b", "children":[
      { "title":"Level 1.b.a" },
      { "title":"Level 1.b.b" },
      { "title":"Level 1.b.c" }
    ] },
    { "title":"Level 1.c" }
  ]
}