2021-10-16 3:01:02[1634353262.3749] - new buy order: Array
(
    [contract] => DOT_USDT
    [price] => 44.1848
    [size] => 40
    [tif] => gtc
)
 Array
(
    [id] => 78475808432
    [contract] => DOT_USDT
    [mkfr] => 0
    [tkfr] => 0.0005
    [tif] => gtc
    [is_reduce_only] => 
    [create_time] => 1634353262.253
    [price] => 44.1848
    [size] => 40
    [refr] => 0
    [left] => 33
    [text] => api
    [fill_price] => 44.1848
    [user] => 621225
    [status] => open
    [is_liq] => 
    [refu] => 0
    [is_close] => 
    [iceberg] => 0
)

2021-10-16 15:01:02[1634396462.4509] - new buy order: Array
(
    [contract] => DOT_USDT
    [price] => 42.5316
    [size] => 0
    [tif] => gtc
)
 Array
(
    [label] => INVALID_ARGUMENT
    [detail] => invalid size
)

2021-10-16 18:01:02[1634407262.2711] - new buy order: Array
(
    [contract] => DOT_USDT
    [price] => 41.98
    [size] => 42
    [tif] => gtc
)
 Array
(
    [id] => 78776338306
    [contract] => DOT_USDT
    [mkfr] => 0
    [tkfr] => 0.0005
    [tif] => gtc
    [is_reduce_only] => 
    [create_time] => 1634407262.129
    [finish_time] => 1634407262.129
    [price] => 41.98
    [size] => 42
    [refr] => 0
    [left] => 0
    [text] => api
    [fill_price] => 41.98
    [user] => 621225
    [finish_as] => filled
    [status] => finished
    [is_liq] => 
    [refu] => 0
    [is_close] => 
    [iceberg] => 0
)