required-response

{
	"id":"10",
	"type":"top_level",
  "single_field": "2013",
  "set_of_values": [
    {
    	"type":"level_1_type_1",
      "inner_field_1": "Value 1",
      "inner_field_2": "Value 2"
    },
    {
    	"type":"level_1_type_1",
      "inner_field_1": "Value 10",
      "inner_field_2": "Value 20"
    }
  ],
  "another_set_of_values": [
    {
    	"type":"level_1_type_2",
      "inner_field_x": "Value 9",
      "inner_field_y": "Value g"
    },
    {
    	"type":"level_1_type_2",
      "inner_field_x": "Value f",
      "inner_field_y": "Value a"
    }
  ],
}