2021-12-19 3:01:02[1639882862.8333] - new buy order: Array
(
    [contract] => DOT_USDT
    [price] => 25.3746
    [size] => -2370
    [tif] => gtc
)
 Array
(
    [label] => INSUFFICIENT_AVAILABLE
    [detail] => margin 7613.0698719375 while available 0.798488394743
)

2021-12-19 15:01:03[1639926063.2819] - new buy order: Array
(
    [contract] => DOT_USDT
    [price] => 25.1833
    [size] => -2369
    [tif] => gtc
)
 Array
(
    [label] => INSUFFICIENT_AVAILABLE
    [detail] => margin 7552.486622584375 while available 0.798488394743
)