Interpreting Logs- defective HTTP & mcs.android.com message

[REDACTED]

I started seeing these messages from com.avast.proxy logs. I don't have an Android device, so I am not sure what these are.

Here is the Message portion- not sure what other parts are relevant, but can give more information if needed. Thanks!
Edit: I noticed these are preceded (1ms) by a "Defective HTTP request!" message, same SenderMachUUID.

Example 1:

)�

chrome-41.0.2272.89mcs.android.com5038238397607601212"5038238397607601212*26444942261064363972android-45eb6b20ff22643cB
new_vc
1`


Example 2:

)�
chrome-41.0.2272.89mcs.android.com5038238397607601212"5038238397607601212*26444942261064363972android-45eb6b20ff22643cB
new_vc
1R#0:1426330399585030%fc943609f9fd7ecdR#0:1426330400426333%fc943609f9fd7ecdR#0:1426330400427943%fc943609f9fd7ecdR#0:1426330406163811%fc943609f9fd7ecdR#0:1426330406165498%fc943609f9fd7ecdR#0:1426330406409162%fc943609e652c89dR#0:1426330406550848%fc943609e652c89d`