Jolt Spec to add a key-value pair to every object in a array

[#1]

{

    "responseMetadata": {

        "responseType": "PERSONAL",

        "activityDataExist": true

    },

    "serviceFunctionCode": "Send",

    "requestId": "1234",

    "responseCode": "SUCCESS",

    "responseData": {

        "responseList": [

            {

                "individualInfo": {

                    "firstName": "Jessica",

                    "middleName": "dean",

                    "lastName": "William",

                    "dateOfBirth": "07/18/1986"

                }

            }

        ]

    }

}
In the above Json I want to add "activityUID":"${UUID()}" as the first field in individualInfo object. 
Json may contain more than one IndividualInfo object.
Can you please help me with the Json spec to do that.

[#2]

Hi,

You can try the following spec:

[
  {
    "operation": "shift",
    "spec": {
      "*": "&",
      "responseData": {
        "responseList": {
          "*": {
            "individualInfo": {
              "#${UUID()}": "responseData.responseList.[&2].individualInfo.activityUID",
              "firstName": "responseData.responseList.[&2].individualInfo.&",
              "middleName": "responseData.responseList.[&2].individualInfo.&",
              "lastName": "responseData.responseList.[&2].individualInfo.&",
              "dateOfBirth": "responseData.responseList.[&2].individualInfo.&"
            }
          }
        }
      }
    }
  }
]

If that helps please accept solution.

Thanks