Composite Unique in migration sequelize

queryInterface.createTable('actions', {
            id: {
                type: Sequelize.INTEGER,
                primaryKey: true,
                autoIncrement: true
            },
            system_id: {
                type: Sequelize.STRING,
            },
            rule_id: {
                type: Sequelize.STRING,
            },
            plan_id: {
                type: Sequelize.INTEGER,
                unique: 'actions_unique',
            }
        }, {
            uniqueKeys: {
                actions_unique: {
                    fields: ['system_id', 'rule_id', 'plan_id']
                }
            }
        });