A data export should help a person understand and move their information. For a podcast app, that may include follows, listening history, and playback state. It should not contain your workspace key, internal secrets, or another account's records.
Start by defining the export's scope in plain language. A catalog record used by the app and a listener's personal note may belong to different data categories.
Build the request from authenticated ownership
Use the authenticated account to choose the listener mapping. Do not trust an email or listener ID supplied in the export form without checking it. Record the request and completion state using a safe internal identifier.
For the file, prefer a documented machine-readable format with clear field names and timestamps. Add a short explanation of identifiers and units. A playback position called 1234 is not useful unless the recipient knows whether it means seconds or milliseconds.
Use an authorized delivery path. Avoid placing exports at predictable public URLs. If a temporary download link is part of your design, give it a defined lifetime and ensure it cannot be reused outside its intended access rules.
Review the result as the listener
Open an export from a controlled test account with several follows and history entries. Check that the expected records are present and that no access tokens, server headers, or debugging data appear.
Also test an account with no saved information. An empty but valid export is better than a generic failure that makes the user think their request was ignored.
Podnivo documents listener export support. Your application still needs to handle identity checks, user communication, and secure delivery around that API operation.