2021-11-22 0:01:03[1637539263.7771] - new buy order: Array
(
    [contract] => DOT_USDT
    [price] => 42.1022
    [size] => 6
    [tif] => gtc
)
 Array
(
    [id] => 96888172118
    [contract] => DOT_USDT
    [mkfr] => 0
    [tkfr] => 0.0005
    [tif] => gtc
    [is_reduce_only] => 
    [create_time] => 1637539263.646
    [price] => 42.1022
    [size] => 6
    [refr] => 0
    [left] => 6
    [text] => api
    [fill_price] => 0
    [user] => 621225
    [status] => open
    [is_liq] => 
    [refu] => 0
    [is_close] => 
    [iceberg] => 0
)