add use

src/common/interserver.rs

@@ -1,6 +1,7 @@
 use std::net::Ipv4Addr;
 use serde::{Serialize, Deserialize};
 use serde::de::DeserializeOwned;
+use crate::entity::account::UserAccountId;
 use crate::entity::character::CharacterEntityId;
 
 #[derive(Debug, Copy, Clone, Serialize, Deserialize, Hash, PartialEq, Eq, PartialOrd, Ord)]