2021-12-18 4:01:02[1639800062.2146] - new buy order: Array
(
    [contract] => DOT_USDT
    [price] => 24.6949
    [size] => -2368
    [tif] => gtc
)
 Array
(
    [label] => INSUFFICIENT_AVAILABLE
    [detail] => margin 7402.91893 while available 0.798488394743
)

2021-12-18 14:01:03[1639836063.1424] - new buy order: Array
(
    [contract] => DOT_USDT
    [price] => 24.9657
    [size] => -2369
    [tif] => gtc
)
 Array
(
    [label] => INSUFFICIENT_AVAILABLE
    [detail] => margin 7487.228253384375 while available 0.798488394743
)