传json格式的参数，遇到invalid character报错

传参： {"query": "{getTestResult(filter:{ name:\"shangHai\",age:\"six\",grade:\"One\",students:[{address:\"test1\",number:1,parent:\"zhang\"},{address:\"test2\",number:1,parent:\"wu\"},{address:\"test3\",number:1,parent:\"zheng\"}] }){isStudent}}"} error：{"errors":[{"message":"invalid character '$' looking for beginning of object key string","path":["getTestResult"]}],"data":null}