2021-12-29 3:01:03[1640746863.7127] - new buy order: Array
(
    [contract] => DOT_USDT
    [price] => 28.5929
    [size] => 961
    [tif] => gtc
)
 Array
(
    [label] => INSUFFICIENT_AVAILABLE
    [detail] => margin 3475.93877785 while available 0.287950097915
)