Extract string nested in JSON value

UPDATE: If you ever need to modify a record use this solution: https://community.cloudera.com/t5/Support-Questions/NiFi-UpdateRecord-processor-is-not-updating-JSON-path/m-p/186256

ORIGINAL question:

How can I extract a string nested in the value of a JSON? For the status key below, I only want the value Active, instead of MapRecord[{current_status=Active}].

Original JSON

{
  "indicator": "147.183.200.154",
  "timestamp": 1577742090000,
  "status": "MapRecord[{current_status=Active}]"
}

Desired final JSON

{
  "indicator": "147.183.200.154",
  "timestamp": 1577742090000,
  "status": "Active"
}