What do mean by "draw the actual data" ?
If you think about listing the products, you could try the following for ten product from the 20th:
curl -u username:password "https://scihub.esa.int/dhus/odata/v1/Products?$skip=19&$top=10"
You can get the full data model exposed via the following call:
curl -u username:password "https://scihub.esa.int/dhus/odata/v1/$metadata"
It should be a good starting point for building the OData URLs and browse the content of a DHuS, download the products, get metadata, quicklook, GML footprint or even get values extracted the product content i.e. file content.
I hope this helps. Do not hesitate for any further information ;)