diff --git a/src/modules/user/entities/user.entity.ts b/src/modules/user/entities/user.entity.ts
index 86d721c..da53c6d 100644
--- a/src/modules/user/entities/user.entity.ts
+++ b/src/modules/user/entities/user.entity.ts
@@ -3,7 +3,7 @@ import { Entity, Column, PrimaryGeneratedColumn } from 'typeorm';
 @Entity()
 export class User {
   @PrimaryGeneratedColumn()
-  id: number;
+  id: string;
 
   @Column()
   email: string;
diff --git a/src/modules/user/user.repository.ts b/src/modules/user/user.repository.ts
index 5acb6c4..a6c91bb 100644
--- a/src/modules/user/user.repository.ts
+++ b/src/modules/user/user.repository.ts
@@ -4,16 +4,20 @@ import { DynamoDBDocument, QueryCommandOutput, GetCommandOutput, UpdateCommandOu
 import * as bcrypt from 'bcrypt';
 import { DatabaseError } from 'src/core/errors/database-error';
 import { UserType } from 'src/types/userType';
+import { User } from './entities/user.entity';
 
 interface UserInfo {
   id?: string;
   email: string;
   password: string;
-  [key: string]: string;
+  PK?: string;
+  SK?: string;
 }
 
 interface UserTest {
   [key: string]: string;
+  PK?: string;
+  SK?: string;
 }
 
 @Injectable()
@@ -88,7 +92,7 @@ export class UserRepository {
     }
   }
 
-  async update(id: string, userInfo: Partial<UserInfo>): Promise<UserInfo | null> {
+  async update(id: string, userInfo: Partial<UserInfo>): Promise<User | null> {
     let updateExpression = 'set';
     const ExpressionAttributeNames: { [key: string]: string } = {};
     const ExpressionAttributeValues: { [key: string]: unknown } = {};
@@ -112,7 +116,7 @@ export class UserRepository {
         ReturnValues: 'ALL_NEW', // return updated all data
       });
 
-      return result.Attributes as UserInfo | null;
+      return result.Attributes as User | null;
     } catch (e) {
       throw new DatabaseError();
     }
diff --git a/src/modules/user/user.service.ts b/src/modules/user/user.service.ts
index a004571..27d7354 100644
--- a/src/modules/user/user.service.ts
+++ b/src/modules/user/user.service.ts
@@ -61,10 +61,11 @@ export class UserService {
       userInfo['nickname'] = nickName;
     }
 
-    const item = await this.usersRepository.create({ ...userInfo, userType });
+    const item = await this.usersRepository.create(userInfo);
 
     const responseItem = {
       id: item.PK,
+      userType: userType, // Add this line
       ...item,
     };
     delete responseItem.PK;
@@ -119,7 +120,7 @@ async update(id: string, userInfo: UpdateUserInfoRequestDto): Promise<Omit<User,
     const order = query.order;
     const level = query.level;
     const encodedStartKey = query.startKey;
-    let startKey: any;
+    let startKey: string;
     if (encodedStartKey) {
       const decodedString = Buffer.from(encodedStartKey, 'base64').toString(
         'utf-8',