diff --git a/src/main.rs b/src/main.rs
index 11a4e00..648fe67 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,5 +1,5 @@
 use anyhow::Error;
-use connection::{connection_worker, Connections, RawConnection};
+use connection::{Connections, RawConnection};
 use giterated_daemon::{
     authentication::AuthenticationTokenGranter,
     backend::{
diff --git a/src/model/authenticated.rs b/src/model/authenticated.rs
index 0d10197..8775949 100644
--- a/src/model/authenticated.rs
+++ b/src/model/authenticated.rs
@@ -62,10 +62,26 @@ impl<T: Serialize> Authenticated<T> {
             message,
         }
     }
+
+    pub fn new_empty(message: T) -> Self {
+        Self {
+            source: vec![],
+            message_type: type_name::<T>().to_string(),
+            message,
+        }
+    }
+
+    pub fn append_authentication(&mut self, authentication: impl AuthenticationSourceProvider) {
+        let message_payload = serde_json::to_vec(&self.message).unwrap();
+
+        self.source
+            .push(authentication.authenticate(&message_payload));
+    }
 }
 
 mod verified {}
 
+#[derive(Clone, Debug)]
 pub struct UserAuthenticator {
     pub user: User,
     pub token: UserAuthenticationToken,
@@ -80,6 +96,7 @@ impl AuthenticationSourceProvider for UserAuthenticator {
     }
 }
 
+#[derive(Clone)]
 pub struct InstanceAuthenticator<'a> {
     pub instance: Instance,
     pub private_key: &'a str,