curl --request POST \
  --url https://api.nateq.io/api/v1/files/presigned-upload \
  --header 'Content-Type: application/json' \
  --data '
{
  "contentType": "<string>",
  "fileSize": 123,
  "fileType": "<string>",
  "filename": "<string>",
  "metadata": {}
}
'

{
  "expiresIn": 123,
  "fileId": "<string>",
  "fileUrl": "<string>",
  "s3Key": "<string>",
  "uploadUrl": "<string>"
}