应用: 哔哩哔哩
任务: 打开哔哩哔哩，进入音乐频道，订阅‘哔哩哔哩音乐’
操作步骤:
step_id: 0
action: CLICK
step_id: 1
action: CLICK
step_id: 2
action: CLICK
step_id: 3
action: STOP