Exporting a table or row as JSON doesn't recognize JSON data columns

Even if I mark a column as JSON with the help of the "Set Highlighting Language" option, exporting a table or row will not recognise any JSON inside these columns. And it will escape any double quotes because it treats the entire contents of the column as a JSON value.

Does anyone have any workaround? I tried to look at the json groovy script, but couldn't figure it out without learning the script language first.

Here's an example of a JSON exported row:

[
  {
    "EventType": "ManufactureProcessError",
    "EventSource": "ManufactureStateMachine",
    "Payload": "{\"product_version\":\"86C20751-D11E-4115-83E3-8A049A03A780\",\"serial_number\":\"\",\"event\":{\"station\":\"20\",\"action\":\"LeaveS20\",\"current_state\":\"AtS20\",\"message\":\"No valid conditions for 'LeaveS20'.\"}}"
  }
]