What is the uid of Sausage Party official service?

The function of UID is that players can enter UID to add friends, because the name of the game Sausage Party can be repeated.

So players directly input the name to add friends is certainly not useful, then you need to input the UID to add friends accurately.

uid is a kind of account for UNIX-like systems, user ID (English: useridentifier, generally abbreviated as UserID or UID).