2021-12-12 23:01:03[1639350063.2807] - new buy order: Array
(
    [contract] => DOT_USDT
    [price] => 29.8016
    [size] => -2376
    [tif] => gtc
)
 Array
(
    [label] => INSUFFICIENT_AVAILABLE
    [detail] => margin 8963.9264088 while available 0.798488394743
)