Original JSON:
{"select":{"jub":["id"]},"from":{"jub":{"acqcr":{"type":"left"}}},"where":{"+jub":{"purchase_order":"848"},"-or":[{"+jub":{"state":{"not in":["received","cancelled"]}}},{"-and":[{"+jub":{"state":"cancelled"}},{"+acqcr":{"keep_debits":"t"}}]}]}}

JSON query: {"select":{"jub":["id"]},"from":{"jub":{"acqcr":{"type":"left"}}},"where":{"+jub":{"purchase_order":"848"},"-or":[{"+jub":{"state":{"not
[ERR :31246:osrf_parse_json.c:844:] *JSON Parser Error
 - char  =
 - index = 137
 - near  => {"state":{"not
 - Quoted string not terminated
Invalid JSON