// Find all users with specific show in their lists
 let ListIds = await  ShowLists.findAll({
                    attributes: ['list_id'],
                      where: {show_id: showId}
                           })

                      ListIds = ListIds.map(result => result.list_id);

                    let UserIds = await UsersLists.findAll({
                        attributes: ['user_id'],
                        where: {
                            list_id: {
                                [Op.in]: ListIds
                            }
                        }
                    })
            UserIds = UserIds.map(result => result.user_id);
                    let users = await Users.findAll({
                        where: {
                            id: {
                                [Op.in]: UserIds
                            }
                        }
                    })