I disagree here.
Decoding the Base64 presented shows the start of a certificate. It looks like it's a v3 certificate, with a serialNumber equal to 0x40000000d1bdcd0d49bf664c00ce8524, but the hashalg is something private (OID 1.3.6.1.4.1.3670.1.2), which is owned by Mr Pavlov Roman. We also have the very start of the issuerName.
2013/2/7
<jckidder@aep.com>
This is not a correctly encoded certificate.
The data you're trying to add to userCertificate appears to be base64
encoded ASCII and not binary.
--
Erwann.