2021-12-28 5:01:02[1640667662.9001] - new buy order: Array
(
    [contract] => DOT_USDT
    [price] => 28.9716
    [size] => 961
    [tif] => gtc
)
 Array
(
    [label] => INSUFFICIENT_AVAILABLE
    [detail] => margin 3521.9760114 while available 0.287950097915
)

2021-12-28 14:01:02[1640700062.8802] - new buy order: Array
(
    [contract] => DOT_USDT
    [price] => 29.2838
    [size] => 961
    [tif] => gtc
)
 Array
(
    [label] => INSUFFICIENT_AVAILABLE
    [detail] => margin 3559.9290727 while available 0.287950097915
)

2021-12-28 17:01:03[1640710863.3925] - new buy order: Array
(
    [contract] => DOT_USDT
    [price] => 29.2054
    [size] => 961
    [tif] => gtc
)
 Array
(
    [label] => INSUFFICIENT_AVAILABLE
    [detail] => margin 3550.3982591 while available 0.287950097915
)