sub question for multiple selection

{
  "userid": "59f6c8ebf36d282363081d87",
  "title": "NDWJN",
  "questionTemplate": [
    {
      "question": "Multi selection",
      "answers": [
        {
          "answer": "AAA",
          "subQuestions": [
            {
              "question": "AA",
              "answer": "test",
              "questionTemplateSubQuestionId": "5f8fd57e62b35b077416f172",
              "isAnswerMandatory": false,
              "type": 0
            }
          ]
        },
        {
          "answer": "BBB"
        }
      ],
      "questionTemplateId": "5f89233c62b35b1a6ca492ef",
      "type": 2
    }
  ]
}