2021-12-30 0:01:02[1640822462.6033] - new buy order: Array
(
    [contract] => DOT_USDT
    [price] => 26.8426
    [size] => 962
    [tif] => gtc
)
 Array
(
    [label] => INSUFFICIENT_AVAILABLE
    [detail] => margin 3266.5565218 while available 0.287950097915
)

2021-12-30 5:01:04[1640840464.081] - new buy order: Array
(
    [contract] => DOT_USDT
    [price] => 26.5768
    [size] => 962
    [tif] => gtc
)
 Array
(
    [label] => INSUFFICIENT_AVAILABLE
    [detail] => margin 3234.2105224 while available 0.287950097915
)