2021-12-20 0:01:03[1639958463.6867] - new buy order: Array
(
    [contract] => DOT_USDT
    [price] => 24.7675
    [size] => 2040
    [tif] => gtc
)
 Array
(
    [label] => INSUFFICIENT_AVAILABLE
    [detail] => margin 6391.50105 while available 152.143265510815
)

2021-12-20 2:01:03[1639965663.5104] - new buy order: Array
(
    [contract] => DOT_USDT
    [price] => 24.6283
    [size] => 2040
    [tif] => gtc
)
 Array
(
    [label] => INSUFFICIENT_AVAILABLE
    [detail] => margin 6355.579098 while available 152.143265510815
)