[ { "folderId": 1, "label": "Folder 1", "children": [ { "folderId": 3, "label": "Folder 3", "leaf": false }, { "fileId": 1, "label": "File 1" }, { "fileId": 2, "label": "File 2" }, { "fileId": 3, "label": "File 3" } ] }, { "folderId": 2, "label": "Folder 2", "children": [ { "fileId": 4, "label": "File 4" }, { "fileId": 5, "label": "File 5" }, { "fileId": 6, "label": "File 6" } ] } ]