Are you searching Harmony 2.2.2-0 (Mod Dependency) for Cities: Skylines for download? Then you are on the right website, here you can easily download Harmony 2.2.2-0 Mod from our website.
It also hotpatches older Harmony versions (1.2.0.1 and 1.1.0.0) and adds limited cross-compatibility for Harmony 1.0.9.1. All of those versions are still used by various mods. The patching is necessary because Harmony 1.x is incompatible with 2.x. This workshop item will be updated to the latest stable Harmony 2.x version in periodic intervals.
Why did this mod suddenly appear in my content manager?
Some mods might force an automatic subscription to this mod. It is safe to assume that this mod is required by some other mod you have installed.
Do I have to enable it in content manager?
It doesn't matter. Other mods will use the files provided by this mod, no matter if it is enabled for not.