2021-11-09 4:01:03[1636430463.9248] - new buy order: Array
(
    [contract] => DOT_USDT
    [price] => 53.0569
    [size] => 8
    [tif] => gtc
)
 Array
(
    [id] => 89578023724
    [contract] => DOT_USDT
    [mkfr] => 0
    [tkfr] => 0.0005
    [tif] => gtc
    [is_reduce_only] => 
    [create_time] => 1636430463.798
    [price] => 53.0569
    [size] => 8
    [refr] => 0
    [left] => 8
    [text] => api
    [fill_price] => 0
    [user] => 621225
    [status] => open
    [is_liq] => 
    [refu] => 0
    [is_close] => 
    [iceberg] => 0
)

2021-11-09 13:01:03[1636462863.4323] - new buy order: Array
(
    [contract] => DOT_USDT
    [price] => 51.7655
    [size] => 0
    [tif] => gtc
)
 Array
(
    [label] => INVALID_ARGUMENT
    [detail] => invalid size
)

2021-11-09 18:01:03[1636480863.534] - new buy order: Array
(
    [contract] => DOT_USDT
    [price] => 51.1857
    [size] => 6
    [tif] => gtc
)
 Array
(
    [id] => 89946149212
    [contract] => DOT_USDT
    [mkfr] => 0
    [tkfr] => 0.0005
    [tif] => gtc
    [is_reduce_only] => 
    [create_time] => 1636480863.402
    [finish_time] => 1636480863.402
    [price] => 51.1857
    [size] => 6
    [refr] => 0
    [left] => 0
    [text] => api
    [fill_price] => 51.1766
    [user] => 621225
    [finish_as] => filled
    [status] => finished
    [is_liq] => 
    [refu] => 0
    [is_close] => 
    [iceberg] => 0
)