Updates the metadata of a file and of the documents created from this file. You can modify existing metadata or add new ones. If you send a new metadata dictionary, it's merged with the existing dictionary. To change the value of an existing key, pass this key with the new value. To add a new key:value pair, simply pass it in the request. It will add the new metadata and keep the existing ones. To delete a key:value pair, pass the key with None as value, for example: "author":"None". (But to fully delete all metadata, upload the file again.)
Click Try It! to start a request and see the response here!