Add it to your server
In your server's .ini file (servertest.ini by default), add these to the existing WorkshopItems= and Mods= lines, separated by a semicolon (;).
WorkshopItems=3819209816
Mods=TheRainPBZPerformanceFix
| Workshop item | Subscribers | Declared in |
|---|---|---|
| The Rain - Performance Fixes3819209816 | 62 | description footer |