JFile seems to work well now.

testing/jfile_test.data

@@ -1 +1 @@
-{}
+{"name":"Cohen","health":"100","comment":"this is a comment","racex":"elvin","race":"human","array":["test1","test2","test3"],"tester":"test field","object1":{"attr1":"value1","attr2":{"xattr1":"xvalue1","xattr2":"xvalue2","xattr3":"xvalue3"},"attr3":"Im not an object"}}