Are you trying to pass accountId of the current executing user to filter the list? Or view the accountId value from your REST call? You seem to have merged the two concepts together.
Seems like you want to add a where argument in your translation script to filter based on the current user’s accountId. Instead you are trying to hardcode the user’s tenantId as the name value for all options. Or in a Request script you can filter the payload prior to the return similar to this thread.