Load a JSON string into a data structure.
Also, create a new data structure and serialize it into JSON.

Use objects and arrays (as appropriate for your language)
and make sure your JSON is valid (https://jsonformatter.org).

 
(ql:quickload '("cl-json"))
 
(json:encode-json
 '#( ((foo . (1 2 3)) (bar . t) (baz . #\!))
    "quux" 4/17 4.25))
 
(print (with-input-from-string
	   (s "{\"foo\": [1, 2, 3], \"bar\": true, \"baz\": \"!\"}")
	 (json:decode-json s)))
 
 