Upload your CSV file to the presigned URL using an HTTPS PUT request.
Example (curl):
curl -X PUT \
-H "Content-Type: text/csv" \
--upload-file your-tags.csv \
"PRESIGNED_URL_FROM_STEP_1"For compressed files (.csv.gz):
curl -X PUT \
-H "Content-Type: text/csv" \
-H "Content-Encoding: gzip" \
--upload-file your-tags.csv.gz \
"PRESIGNED_URL_FROM_STEP_1"