Get JSON Data from API Call and pass it to component as a parameter

I have a URL that I am returning Json data, that is need to pass as a parameter to react component, that component is: https://rsuitejs.com/components/multi-cascader

and here is my code:

fetch('http://ABCServer/LabMag/Home/GetCategories')
.then(response => response.json())
.then(json => console.log(json));

ReactDOM.render(

Cascade:

---

Not cascaded:

, document.getElementById('root'));