'code': 500, 'msg': "Fields [target, memberId] are required for type with serial name

[nksolo]

get_id={"sessionKey":authkey ,"target": 1043729733,"memberId": 2803669474}
res=requests.get(url,data=json.dumps(get_id)).json()

报错：{'code': 500, 'msg': "Fields [target, memberId] are required for type with serial name 'net.mamoe.mirai.api.http.adapter.internal.dto.parameter.MemberTargetDTO', but they were missing"}