diff --git a/auth/v1/msg.proto b/auth/v1/msg.proto
index 5dcdb0d..34cf9aa 100644
--- a/auth/v1/msg.proto
+++ b/auth/v1/msg.proto
@@ -226,7 +226,9 @@ message Recipient {
   string key = 1;
   optional string first_name = 2;
   optional string last_name = 3;
-  optional string public_key = 4;
+  optional int64 user_id = 4;
+  optional string public_key = 5;
+
 }
 
 message LookUpNameReq {
@@ -235,4 +237,4 @@ message LookUpNameReq {
 
 message LookUpNameRes {
   Recipient recipient = 1;
-}
\ No newline at end of file
+}