diff --git a/native/native_rust_library/src/lib.rs b/native/native_rust_library/src/lib.rs
--- a/native/native_rust_library/src/lib.rs
+++ b/native/native_rust_library/src/lib.rs
@@ -212,7 +212,9 @@
 
 #[derive(Serialize)]
 struct UserIDAndDeviceAccessToken {
+  #[serde(rename = "userId")]
   user_id: String,
+  #[serde(rename = "accessToken")]
   access_token: String,
 }