signin+userlevelsystem
Change-Id: I4d2b2660b23521817ae2ed6a55c6c322a20385ec
diff --git a/src/main/java/com/example/g8backend/service/ISigningService.java b/src/main/java/com/example/g8backend/service/ISigningService.java
new file mode 100644
index 0000000..e408e6c
--- /dev/null
+++ b/src/main/java/com/example/g8backend/service/ISigningService.java
@@ -0,0 +1,7 @@
+package com.example.g8backend.service;
+
+import com.example.g8backend.dto.ApiResponse;
+
+public interface ISigningService {
+ boolean signIn(Long userId);
+}
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