https://github.com/BitMEX/sample-market-maker
heroku ps:exec --dyno=grid_worker.1 heroku ps:copy --dyno=grid_worker.1 20190307_12.log
API_KEY = "EDwDQjVbWdHgNa5V-duD1eKD" API_SECRET = "T5t1bugZFKUHJLXQB3JlhHy3pD7GxfzaqanWREv4LYF6Ld_r"
Y3sFiwog46-1qtsxPCoK0Gpu pN9kRI_7ucOmNz6L9K79_S1meKQP2aoBxsjIpMBY-xbTSB_2