The term parametric quantity is identified in base64 scheme by the sequence cGFyYW1ldHJpYyBxdWFudGl0eQ==, while the MD5 signature is equal to 1957cbee9ab490dbbf5ac962d01dc60e. The ASCII encoding of parametric quantity in hexadecimal notation is 706172616d6574726963207175616e74697479.