curl --request POST \
  --url https://api.example.com/material/delAssets \
  --header 'Content-Type: multipart/form-data' \
  --form ids= \
  --form 'ids[0]=1' \
  --form 'ids[1]=2'

const form = new FormData();
form.append('ids', '');
form.append('ids[0]', '1');
form.append('ids[1]', '2');

const options = {method: 'POST'};

options.body = form;

fetch('https://api.example.com/material/delAssets', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://api.example.com/material/delAssets"

payload = "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"ids\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"ids%5B0%5D\"\r\n\r\n1\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"ids%5B1%5D\"\r\n\r\n2\r\n-----011000010111000001101001--"

response = requests.post(url, data=payload)

print(response.text)

{}

{}