diff --git a/build.gradle b/build.gradle
index 9d06bd3..855551a 100644
--- a/build.gradle
+++ b/build.gradle
@@ -5,7 +5,7 @@ plugins {
 }
 
 group = 'com.fhsh.daitda'
-version = '0.1.3-SNAPSHOT'
+version = '0.1.4-SNAPSHOT'
 
 java {
 	toolchain {
diff --git a/src/main/java/com/fhsh/daitda/domain/BaseUserEntity.java b/src/main/java/com/fhsh/daitda/domain/BaseUserEntity.java
index 972a733..3851685 100644
--- a/src/main/java/com/fhsh/daitda/domain/BaseUserEntity.java
+++ b/src/main/java/com/fhsh/daitda/domain/BaseUserEntity.java
@@ -7,40 +7,33 @@
 import org.springframework.data.annotation.CreatedBy;
 import org.springframework.data.annotation.LastModifiedBy;
 import org.springframework.data.jpa.domain.support.AuditingEntityListener;
-import org.springframework.util.StringUtils;
 
 import java.time.LocalDateTime;
+import java.util.UUID;
 
 @Getter
 @MappedSuperclass
 @EntityListeners(AuditingEntityListener.class)
 public abstract class BaseUserEntity extends BaseEntity {
 
-    private static final int AUDITOR_MAX_LENGTH = 45;
-
     @CreatedBy
-    @Column(length = AUDITOR_MAX_LENGTH, updatable = false)
-    protected String createdBy;
+    @Column(updatable = false)
+    protected UUID createdBy;
 
     @LastModifiedBy
-    @Column(length = AUDITOR_MAX_LENGTH)
-    protected String updatedBy;
+    protected UUID updatedBy;
 
-    @Column(length = AUDITOR_MAX_LENGTH)
-    protected String deletedBy;
+    protected UUID deletedBy;
 
     // Soft Delete 구현
-    protected void delete(String deletedBy) {
+    public void delete(UUID deletedBy) {
         // 중복 삭제로 인해 삭제 관련 필드가 업데이트되는 상황을 방지
         if (isDeleted()) {
             return;
         }
-
-        validateAuditorLength(deletedBy);
-
-        // 삭제자가 없으면 SYSTEM 삭제로 간주
-        this.updatedBy = StringUtils.hasText(deletedBy) ? deletedBy : "SYSTEM";
-        this.deletedBy = StringUtils.hasText(deletedBy) ? deletedBy : "SYSTEM";
+        
+        this.updatedBy = deletedBy;
+        this.deletedBy = deletedBy;
 
         this.updatedAt = LocalDateTime.now();
         this.deletedAt = LocalDateTime.now();
@@ -50,23 +43,16 @@ public boolean isDeleted() {
         return this.deletedAt != null;
     }
 
-    public void restore(String restoredBy) {
+    // 삭제 복구
+    public void restore(UUID restoredBy) {
         if (!isDeleted()) {
             return;
         }
 
-        validateAuditorLength(restoredBy);
-
-        this.updatedBy = StringUtils.hasText(restoredBy) ? restoredBy : "SYSTEM";
+        this.updatedBy = restoredBy;
         this.deletedBy = null;
 
         this.updatedAt = LocalDateTime.now();
         this.deletedAt = null;
     }
-
-    private void validateAuditorLength(String auditor) {
-        if (auditor != null && auditor.length() > AUDITOR_MAX_LENGTH) {
-            throw new IllegalArgumentException("auditor 정보는 %d자를 초과할 수 없습니다.".formatted(AUDITOR_MAX_LENGTH));
-        }
-    }
 }