Подписант PDF сертификатом PAdES

# 1) Request a presigned URL → returns { uploadUrl, storageKey }
curl -X POST 'https://api.elysiatools.com/api/upload/presign/pdf-pades-certificate-signer' \
  -H 'Content-Type: application/json' \
  -d '{"filename":"pdfFile.ext","contentType":"application/octet-stream","size":12345}'
curl -X POST 'https://api.elysiatools.com/api/upload/presign/pdf-pades-certificate-signer' \
  -H 'Content-Type: application/json' \
  -d '{"filename":"certificateFile.ext","contentType":"application/octet-stream","size":12345}'

# 2) PUT the file bytes directly to the presigned uploadUrl
curl -X PUT '<presigned uploadUrl>' \
  --data-binary @/path/to/file.ext

# 3) Call the tool, passing the returned storageKey for each file field
curl -X POST 'https://api.elysiatools.com/ru/api/tools/pdf-pades-certificate-signer' \
  -F 'pdfFile=/public/processing/smoke-test-document.pdf' \
  -F 'certificateFile=/public/processing/smoke-pades-signer.p12' \
  -F 'certificatePassword=elysia-smoke-password' \
  -F 'signerName=Elysia Tools Signer' \
  -F 'reason=Document approval' \
  -F 'location=Shanghai' \
  -F '[email protected]' \
  -F 'visibleSignature=true' \
  -F 'pageNumber=1' \
  -F 'signatureX=40' \
  -F 'signatureY=35' \
  -F 'signatureWidth=220' \
  -F 'signatureHeight=42' \
  -F 'signatureLength=16384'