This API is subject to change. Bug fixes and new features will be released based on developer feedback throughout the preview period.
Updates the media on a marketing activity's posts with the provided media URL. NOTE: permissions-manager enforces permission.id <= 82 chars; the canonical id derived from the RPC name is 86 chars.
You can only call this method when authenticated as a Wix app or Wix user identity.
This method doesn't return any custom errors, but may return standard errors. Learn more about standard Wix errors.