I have a json file that contains a string of json within an object:
{ \"requestType\": \"POST\", \"response\": { \"size\": 7
Use fromjson.
It parses a string to its appropriate json value. tojson (and @json) goes the other way around and takes a json value and converts it to a string.
tojson
@json
So you could do this:
.response.text | fromjson.title