应用: 美团
任务: 启动美团，进入消息中心，查看最新的系统通知
操作步骤:
step_id: 0
action: CLICK
step_id: 1
action: CLICK
step_id: 2
action: CLICK
step_id: 3
action: CLICK
step_id: 4
action: STOP