code: public boolean authenticate(HttpServletRequest request) throws MnoException {
  		String authHeader = request.getHeader("Authorization");
  		if (authHeader == null || authHeader.isEmpty()) {
  			return false;
  		}
  		String[] auth = authHeader.trim().split("\\s+");
  
  		if (auth == null || auth.length != 2 || !auth[0].equalsIgnoreCase("basic")) {
  			return false;
  		}
  		byte[] decodedStr = DatatypeConverter.parseBase64Binary(auth[1]);
  		String[] creds;
  		try {
  			creds = (new String(decodedStr, "UTF-8")).split(":");
  		} catch (UnsupportedEncodingException e) {
  			throw new MnoException("Could not decode basic authentication" + Arrays.toString(auth), e);
  		}
  
  		if (creds.length == 2) {
  			return authenticate(creds[0], creds[1]);
  		} else {
  			return false;
  		}
  	}
docs: Authenticate a Maestrano request by reading the Authorization header
  
  @param marketplace
  @param appId
  @return authenticated or not
  @throws UnsupportedEncodingException
  @throws MnoException