/*
- 交互命令字符串格式
  action:amount
  action: buy , sell , long , short , cover_long , cover_short, spk , bpk
- 交易所类型
  eType变量取值: 0 spot , 1 futures

- TV文档链接
  https://www.tradingview.com/pine-script-docs/en/v4/Quickstart_guide.html
  https://cn.tradingview.com/chart/8xfTuX7F/

- TV webhook 发送请求