2021-11-06 1:01:03[1636160463.3246] - new sell order: Array
(
    [contract] => DOT_USDT
    [price] => 52.3856
    [size] => -8
    [tif] => gtc
)
 Array
(
    [id] => 87837688080
    [contract] => DOT_USDT
    [mkfr] => 0
    [tkfr] => 0.0005
    [tif] => gtc
    [is_reduce_only] => 
    [create_time] => 1636160463.205
    [finish_time] => 1636160463.205
    [price] => 52.3856
    [size] => -8
    [refr] => 0
    [left] => 0
    [text] => api
    [fill_price] => 52.3858
    [user] => 621225
    [finish_as] => filled
    [status] => finished
    [is_liq] => 
    [refu] => 0
    [is_close] => 
    [iceberg] => 0
)

2021-11-06 15:01:04[1636210864.1257] - new sell order: Array
(
    [contract] => DOT_USDT
    [price] => 50.5549
    [size] => -0
    [tif] => gtc
)
 Array
(
    [label] => INVALID_ARGUMENT
    [detail] => invalid size
)

2021-11-06 17:01:02[1636218062.6958] - new sell order: Array
(
    [contract] => DOT_USDT
    [price] => 50.679
    [size] => -0
    [tif] => gtc
)
 Array
(
    [label] => INVALID_ARGUMENT
    [detail] => invalid size
)

2021-11-06 21:01:03[1636232463.518] - new sell order: Array
(
    [contract] => DOT_USDT
    [price] => 51.5375
    [size] => -0
    [tif] => gtc
)
 Array
(
    [label] => INVALID_ARGUMENT
    [detail] => invalid size
)