Code ds msn log?peut-on dechiffrer ?

Bonjour, esce quon pourrait me dire sil est possible de connaitre ce quil cest dit avec ce code signal? merci ---) ca se trouvait sous msn log

==================================================

Options: 0
Service-Channel: IM/Online
Reliability: 1.0
Messaging: 2.0
Message-Type: Signal/AudioTunnel
Content-Type: text/plain; charset=UTF-8
Content-Length: 632
<sip e="base64" i="1c2196cbba4e4b63b459379b997166fc"><msg>U0lQLzIuMCAxMDAgVHJ5aW5nDQpVc2VyLUFnZW50OiBVQ0NBUEkvNC4wLjc0NDAuMCBXTE0vMTUu
NC4zNTU1LjAzMDggKFdpbmRvd3MgTGl2ZSBNZXNzZW5nZXIpDQp2OiBTSVAvMi4wL1RDUCAxMjcu
MC4wLjE6NjEwMDINCnY6IFNJUC8yLjAvVENQIDEyNy4wLjAuMTo2MTAwNw0KQ1NlcTogMSBJTlZJ
VEUNCmY6IDxzaXA6bC5yYWJpYUBob3RtYWlsLmNvbTttZXBpZD1DREQxNkVBRjI5MkY0QTgxODZG
MzgyNjE1OUI4MzI1Nz47dGFnPWM5OGE5OWY1MjE7ZXBpZD1jMjNmY2NkMjI1DQppOiAxYzIxOTZj
YmJhNGU0YjYzYjQ1OTM3OWI5OTcxNjZmYw0KdDogPHNpcDp0ZW5kcmVzc2UxOTY5QGhvdG1haWwu
Y29tO21lcGlkPTA5NTRCMUFDQ0Y5NjQ1OUU4REZERTUzRUFGMjMzMUQxPjt0YWc9ODQ4NjlmMDVi
YQ0KbDogMA0KDQo=</msg></sip>