{"by_type":{"event":1,"image":1,"text":2},"recent_10":[{"content":"","event":"","from_user":"wangwu","msg_id":"1780387206937755","msg_type":"image","received_at":"Tue, 02 Jun 2026 16:00:05 GMT"},{"content":"","event":"click","from_user":"lisi","msg_id":"","msg_type":"event","received_at":"Tue, 02 Jun 2026 16:00:04 GMT"},{"content":"\u4f60\u597d\uff0c\u8fd9\u662f\u6d4b\u8bd5\u6d88\u606f 16:00:06","event":"","from_user":"zhangsan","msg_id":"1780387206516928","msg_type":"text","received_at":"Tue, 02 Jun 2026 16:00:04 GMT"},{"content":"Hello MySQL","event":"","from_user":"test_user","msg_id":"mysql_test_001","msg_type":"text","received_at":"Tue, 02 Jun 2026 14:46:05 GMT"}],"total":4}