how to handle json with backslash

I received a JSON formatted message from Kafka, but the message has been but it has been escaped with backslash and
looks similar to the following format

"value" : 
"{\"tableName\":\"abc\",\"rowList\":[{\"cpu\":0.000000,\"timest\":1732068300000,\"memory\":0.000000,\"disk_io_write\":0.000000}

How can I convert this message into a normal json format and pass it to json_v2 plugin for parsing

I would try to use a processor to remove the items. Most likely the regex option: telegraf/plugins/processors/regex at master · influxdata/telegraf · GitHub