Errors

{
  "error":"Bad content format",
  "code":"bad_content_format"
}

{
  "error": "Bad signature header",
  "code": "bad_header_signature"
}

{
  "error": "No signature header",
  "code": "required_header_signature"
}

{
  "error": "Bad key header",
  "code": "bad_header_key"
}

{
  "error": "No key header",
  "code": "required_header_key"
}