ChunkSignature added to the uploaded file

[aravinds502]

When a file is Uploaded to GCP via s3proxy, "chunk signature is added in the first and last lines

We are using s3client, Upload multipart Request to upload. The uploaded data was as follows for a sample.csv

69e;chunk-signature=e2d4edfb35ad945809e4c08c2ed8c8abf4406b1af8621b3b91d1224a4d24a613
"Year","Month","DayofMonth","DayOfWeek","DepTime","CRSDepTime","ArrTime","CRSArrTime","UniqueCarrier","FlightNum","TailNum","ActualElapsedTime","CRSElapsedTime","AirTime","ArrDelay","DepDelay","Origin","Dest","Distance","TaxiIn","TaxiOut","Cancelled","CancellationCode","Diverted","CarrierDelay","WeatherDelay","NASDelay","SecurityDelay","LateAircraftDelay"
"1993","1","29","5","1055","1055","1228","1212","US","66","","93","77","","16","0","EWR","BUF","282","","","0","","0","","","","",""
"1993","1","30","6","1052","1055","1214","1212","US","66","","82","77","","2","-3","EWR","BUF","282","","","0","","0","","","","",""
"1993","1","31","7","1103","1055","1213","1212","US","66","","70","77","","1","8","EWR","BUF","282","","","0","","0","","","","",""
"1993","1","1","5","1738","1730","1949","1941","US","68","","131","131","","8","8","MCO","PIT","834","","","0","","0","","","","",""
"1993","1","3","7","1737","1730","1946","1941","US","68","","129","131","","5","7","MCO","PIT","834","","","0","","0","","","","",""
"1993","1","4","1","1739","1730","1951","1941","US","68","","132","131","","10","9","MCO","PIT","834","","","0","","0","","","","",""
"1993","1","5","2","1729","1730","1939","1941","US","68","","130","131","","-2","-1","MCO","PIT","834","","","0","","0","","","","",""
"1993","1","6","3","1730","1730","1940","1943","US","68","","130","133","","-3","0","MCO","PIT","834","","","0","","0","","","","",""
"1993","1","7","4","1734","1730","1942","1943","US","68","","128","133","","-1","4","MCO","PIT","834","","","0","","0","","","","",""
"1993","1","8","5","1812","1730","2015","1943","US","68","","123","133","","32","42","MCO","PIT","834","","","0","","0","","","","",""

0;chunk-signature=c300db3aca97bfed581d9c494fcb458faddc6eda7382701a5b08a89bd74340b8

How to avoid adding the chunk-signatures, while doing uploads with GCP via s3proxy? Is there any setting we can add?
The same thing works fine if we directly connect to GCP.

Thanks,
Aravind