def METHOD_NAME(
    self, item_list: List[UserIdentityConfig], user: Any, **kwargs: Any
) -> MutableMapping[Any, Any]:
    result: MutableMapping[UserIdentityConfig, Any] = {}
    organizations = {
        o.id: o
        for o in organization_mapping_service.get_many(
            organization_ids=[i.organization_id for i in item_list]
        )
    }
    for item in item_list:
        result[item] = dict(organization=organizations.get(item.organization_id))
    return result