Django ReactJS: Pass array from JavaScript frontend to Django Python backend

I've made a website with Django and React JS. I'm trying to pass an array pict from my JavaScript frontend to Django, the Python backend.

let pict = [];

pictureEl.addEventListener(`click`, function () {
  console.log(`Take Pic`);
  pict += webcam.snap();
  console.log(pict);
});

pict is an array of images taken by the camera. How would I pass it to the backend?

from Django ReactJS: Pass array from JavaScript frontend to Django Python backend