shaka-packager/base/test/data/serializer_nested_test.json

{
   "bool": true,
   "dict": {
      "bool": true,
      "dict": {
         "bees": "knees",
         "cats": "meow"
      },
      "foos": "bar",
      "list": [ 3.4, "second", null ]
   },
   "int": 42,
   "list": [ 1, 2 ],
   "null": null,
   "real": 3.14,
   "string": "hello"
}