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=3821293600
Mods=LeavenburgB42
| Workshop item | Subscribers | Declared in |
|---|---|---|
| Leavenburg [B42]3821293600 | 103 | description footer |