How to handle data dependencies with Async

I am currently trying to manage data dependencies in a react app. Usually I would just use waitFor, but this doesnt seem to do here, since it won't wait for the async data fetching, just for the sync operations.

Depender:

``` JavaScript
@bind(Actions.showUserForm)
showUserForm(id) {
const user = UserStore.getState()[id];
this.setState({form: createPrefil(user});
}
```

Dependee:

``` JavaScript
@bind(Actions.getUser, showUserForm.showUser)
getUser(id) {
this.getInstance().getUser(id);
}

@bind(Actions.getUserSucc)
getUserSucc(user) {
this.setState({ [user.id]: user })
}
```

Dependee Source

``` JavaScript
export default {
getUser: {
remote: (state, id) => UserAPI.get(id),
success: Actions.getUserSucc
},
};
```

The Depender needs somehow to wait for the Dependees async response with the user data. I could just listen to the `success` action, though this would trigger the Depender everytime a user is fetched from the backend.

Is there an idiomatic solution for those kind of problems?