Updates a campaign's editor data, including the content and subject line.
The composerDataJson format must match the campaign's existing campaignEditorType. Passing a mismatched format causes a silent failure when sending or previewing the campaign.
This method may require higher-level permissions than the caller has, based on their identity and roles and permissions. In these cases, you can ensure the method is called with the required level of authorization by using one of the following:
This method doesn't return any custom errors, but may return standard errors. Learn more about standard Wix errors.