How can i have a Dutch health insurance as a student in the Netherlands?

I just received a mail which says that I have 4 week only to send the documents that are in the mail, otherwise my Healthcare Insurance will be cancelled from March 28, 2020. I do not have any income and I am maintained by my parents with my living cost and they are living in Italy.How can I have a dutch health insurance ?. I am already student in The Netherlands and I need it in order to get a job and many things.

Have a good day!