diff --git a/src/twitter.rs b/src/twitter.rs
index 8078c90..ec1bb95 100644
--- a/src/twitter.rs
+++ b/src/twitter.rs
@@ -89,6 +89,22 @@ struct UploadMediaCommand {
     media_id: String,
 }
 
+#[derive(Deserialize, Debug)]
+struct UploadMediaResponse {
+    media_id: u64,
+}
+
+#[derive(Serialize, Debug)]
+struct MediaMetadata {
+    media_id: u64,
+    alt_text: MediaMetadataAltText,
+}
+
+#[derive(Serialize, Debug)]
+struct MediaMetadataAltText {
+    text: String,
+}
+
 /// This function returns the OAuth1 Token object from TwitterConfig
 fn get_token(config: &TwitterConfig) -> Token {
     oauth1_request::Token::from_parts(