我需要帮助从该字符串中提取数据，这是ga自定义维度。我有100000行，这是一个测试用例，所有数据都与此字符串相同。
结果
a）我只想在单词查询后提取值，这是3 bhk尝试grepl，但没有用
b）我想分解所有双引号示例过滤器，实体，搜索ID的值......直到traffic_sourcemedium并将所有结果存储在不同的列中
{"filters":{"entity":{"search_city_id":"0b71e081339939e6a43a"}},"error":{},"query":"3 bhk","response":{"totalCount":0,"statusCode":"2XX","version":"A","data":{"templates":[],"filters":{"apartment_type_id":"4"},"modelFilters":{"SORTORDER":{"start":0,"end":1,"text":""},"BHK":{"start":1,"end":3,"text":"3 bhk"}}}},"service":"buy","experiments":{"map_marker":"true","seed_ab_new":"true","search_count":"false","crfv2":"true","moonDragon":"true"},"device":{"device":"desktop","browser":"chrome"},"url":"in_buy_real_estate_vadodara","previous_url":"","time_stamp":1531982158065,"huid":"c27cb9db8bb0fa372122849134fcf90c","uid":"81332890","sid":6,"count":2859,"algo_profile":"user_profile","algo_type":"MC","traffic_sourcemedium":"google / organic"}