How to include multiple keys and values in csv cells for collection runner

How to include a multiple keys with values which is an array inside the CSV cell to be then passed into Collection Runner?

Existing body:

{
      "diagTransactionId": "{{diagTransactionId}}",
      "vin": "{{vin}}",
      "diagnosticMode": "INDIVIDUAL_FAULTTREE",
      "dtcs": [
                {
                  "name": "{{dtcName}}",
                  "ecuName": "{{ecuName}}"
                }
              ],
      "userName": "techuser1"
}

I want to pass the body as follows:

{
  "diagTransactionId": "{{diagTransactionId}}",
  "vin": "{{vin}}",
   "diagnosticMode": "GROUPING",
    "dtcs": [
    {
      "name": "P0301-00",
      "ecuName": "ECM"
    },
        {
      "name": "P0302-00",
      "ecuName": "ECM"
    },
        {
      "name": "P0303-00",
      "ecuName": "ECM"
    },
    {
      "name": "P0304-00",
      "ecuName": "ECM"
    }
  ],
  "userName": "techuser"
  
  
}

CSV file:

|dtcName|ecuName|
|P0301-00|ECM|
|P0302-00|ECM|
|P0303-00|ECM|
|P0304-00|ECM|

Thanks for your post, and sorry we didn’t get to this sooner. This isn’t the experience we want for our users.

Since the post is a bit older, we’re closing it to make room for newer discussions.