Update auth.go, change int to int64

middleware/auth/auth.go

 			}
 
 			if uid, ok := mapClaims[CtxRequestHeaderUserId].(float64); ok {
-				ctx.Set(CtxRequestHeaderUserId, int(uid))
+				ctx.Set(CtxRequestHeaderUserId, int64(uid))
 			}
 		}
 	}

middleware/auth/optional_auth.go

 			}
 
 			if uid, ok := mapClaims[CtxRequestHeaderUserId].(float64); ok {
-				ctx.Set(CtxRequestHeaderUserId, int(uid))
+				ctx.Set(CtxRequestHeaderUserId, int64(uid))
 			}
 		}
 	}