For next: 9336
Since last post: 112 days
Last activity: 38 days
This is the closest source I could find and for those who don't know, he was known for Team Fabulous 2 and other Machinimas such as Heavy Takes His Driving Test. He currently is at around 380,000 subscribers.
Kitty0706's channel: https://www.youtube.com/user/kitty0706/videos
If anyone can find an accurate article about this, feel free to post it.
EDIT: DasBoSchitt tweeted about it early in the morning.