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