diff --git a/bot.go b/bot.go
index 86fd856..883ddf3 100644
--- a/bot.go
+++ b/bot.go
@@ -677,6 +677,12 @@ func botVaultHelp(m *tb.Message) {
 }
 
 func botVault(m *tb.Message) {
+	for _, e := range m.Entities {
+		if e.EntityType == tb.EntityMention {
+			log.Printf("botVault (user) : %s - %d\n", e.User.Username, e.ID)
+		}
+	}
+
 	if !m.Private() {
 		return
 	}