How can we do subscribe dynamic arguments?

help
1

my code:

ListComponent :

renderList() {
        return this.state.deals.map((deal) => (
            <DealItem key={deal._id} deal={deal} />
        ));
    }

DealItem :

componentDidMount() {
        this.dealItemTracker = Tracker.autorun(() => {
            const handle = Meteor.subscribe('product.getName', this.props.deal.productId);
            const product = Products.find().fetch()[0];
            console.log(this.props.deal.productId);
            console.log(product);

            Meteor.subscribe('userData.getName', this.props.deal.orderBy);
            const user = Meteor.users.find().fetch()[0];

            this.setState({
                product: product,
                orderBy: user.profile.firstname
            });
        });
    }

    componentWillUnmount() {
        this.dealItemTracker.stop();
        console.log("Component unmount");
    }