I'm using role approvers as placeholders in a template before replacing them with the actual person needed in the approval, is there any way I can remove the Role Approval via the REST API or can that only be done manually?

Thanks

(I have tried submitting a POST request to requests/{ticketID}/approval_levels/{approvalLevelID}/approvals with a null value in the org_role field, but that gave an error about an unaccepted key)