应用: 快手
任务: 打开快手，查看直播排名，找到榜首的主播，观看并关注
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: CLICK