diff --git a/services/backup/src/constants.rs b/services/backup/src/constants.rs
--- a/services/backup/src/constants.rs
+++ b/services/backup/src/constants.rs
@@ -27,6 +27,7 @@
     pub const USER_DATA: &str = "userData";
     pub const USER_KEYS: &str = "userKeys";
     pub const ATTACHMENTS: &str = "attachments";
+    pub const MSG_BACKUP: &str = "msgBackup";
   }
 }
 
diff --git a/services/backup/src/database/backup_item.rs b/services/backup/src/database/backup_item.rs
--- a/services/backup/src/database/backup_item.rs
+++ b/services/backup/src/database/backup_item.rs
@@ -15,6 +15,7 @@
   pub user_keys: BlobInfo,
   pub user_data: BlobInfo,
   pub attachments: Vec<BlobInfo>,
+  pub msg_backup: Option<String>,
 }
 
 impl BackupItem {
@@ -24,6 +25,7 @@
     user_keys: BlobInfo,
     user_data: BlobInfo,
     attachments: Vec<BlobInfo>,
+    msg_backup: Option<String>,
   ) -> Self {
     BackupItem {
       user_id,
@@ -32,6 +34,7 @@
       user_keys,
       user_data,
       attachments,
+      msg_backup,
     }
   }
 
@@ -109,6 +112,12 @@
       );
     }
 
+    if let Some(msg_backup_value) = value.msg_backup {
+      attrs.insert(
+        backup_table::attr::MSG_BACKUP.to_string(),
+        AttributeValue::S(msg_backup_value),
+      );
+    }
     attrs
   }
 }
@@ -148,6 +157,16 @@
       Vec::new()
     };
 
+    let msg_backup = value.remove(backup_table::attr::MSG_BACKUP);
+    let msg_backup = if msg_backup.is_some() {
+      Some(String::try_from_attr(
+        backup_table::attr::MSG_BACKUP,
+        msg_backup,
+      )?)
+    } else {
+      None
+    };
+
     Ok(BackupItem {
       user_id,
       backup_id,
@@ -155,6 +174,7 @@
       user_keys,
       user_data,
       attachments,
+      msg_backup,
     })
   }
 }
diff --git a/services/backup/src/http/handlers/backup.rs b/services/backup/src/http/handlers/backup.rs
--- a/services/backup/src/http/handlers/backup.rs
+++ b/services/backup/src/http/handlers/backup.rs
@@ -76,12 +76,25 @@
     attachments_revokes.push(revoke);
   }
 
+  let msg_backup_option: Option<String> =
+    match get_text_field(&mut multipart).await.unwrap() {
+      Some((name, msg_backup)) => {
+        if name == "msg_backup" {
+          Some(msg_backup)
+        } else {
+          None
+        }
+      }
+      _ => None,
+    };
+
   let item = BackupItem::new(
     user.user_id.clone(),
     backup_id,
     user_keys_blob_info,
     user_data_blob_info,
     attachments,
+    msg_backup_option,
   );
 
   db_client