OptionalmediaAn existing media asset identifier for reuse in a new association. Mutually exclusive with uploadDestinationId.
OptionaltitleAn optional title for the media asset. Defaults to the filename if not provided.
OptionaluploadThe S3 upload destination identifier from the createUploadDestination operation, for a newly uploaded asset. Mutually exclusive with mediaId.
Input for referencing a media asset during creation. Exactly one of
uploadDestinationIdormediaIdmust be provided.