diff --git a/common/types.hpp b/common/types.hpp
index c2b3510..254c37a 100644
--- a/common/types.hpp
+++ b/common/types.hpp
@@ -34,6 +34,7 @@
 using EntityType = uint16_t;
 using EntityInstance = uint16_t;
 using ContainerID = uint16_t;
+using StateSetId = uint16_t;
 using CompositeCount = uint8_t;
 using SensorOffset = uint8_t;
 using EventState = uint8_t;
diff --git a/common/utils.hpp b/common/utils.hpp
index 7478aab..664169d 100644
--- a/common/utils.hpp
+++ b/common/utils.hpp
@@ -4,6 +4,8 @@
 #include "libpldm/bios.h"
 #include "libpldm/platform.h"
 
+#include "types.hpp"
+
 #include <stdint.h>
 #include <systemd/sd-bus.h>
 #include <unistd.h>
@@ -136,6 +138,10 @@
                  uint64_t, double, std::string>;
 using DbusProp = std::string;
 using DbusChangedProps = std::map<DbusProp, PropertyValue>;
+using DBusInterfaceAdded = std::vector<
+    std::pair<pldm::dbus::Interface,
+              std::vector<std::pair<pldm::dbus::Property,
+                                    std::variant<pldm::dbus::Property>>>>>;
 
 /**
  * @brief The interface for DBusHandler