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=3823153505
Mods=SirenHead
| Workshop item | Subscribers | Declared in |
|---|---|---|
| Siren Head Monster NPC3823153505 | 284 | description footer |