Reading Json Data -

i want extract wkt data (only polygon) below json below can't read it. can please should polygon ((50643441 47943921, 01030605 11233944, 37149703 57863113, 76470172 87135344, 50643441 47943921)) data this

{      "result":{         "resultcode":0,       "resultinfo":null,       "updateinisearchform":null,       "subsearchentry":null,       "data":"{\"parishcode\":null,\"shapes\":[{\"identifier\":\"2769940\",\"displaytitle\":null,\"layername\":null,\"wkt\":\"polygon ((50643441 47943921, 01030605 11233944, 37149703 57863113, 76470172 87135344, 50643441 47943921))\"}],\"bbox\":\"1111, 2222, 333, 2407664\",\"type\":\"address\",\"srid\":3456}",       "surveylabeltables":null    } } 

got working

have parse string again

var wktdata = json.parse(body.result.data);        var polygondata = wktdata.shapes[0].wkt;