2021-12-11 4:01:04[1639195264.0625] - new buy order: Array
(
    [contract] => DOT_USDT
    [price] => 27.4372
    [size] => -2373
    [tif] => gtc
)
 Array
(
    [label] => INSUFFICIENT_AVAILABLE
    [detail] => margin 8242.3260829875 while available 0.798488394743
)