curl -i -X DELETE \
  'https://api.portal.io/public/webhook/unsubscribe/42' \
  -H 'Accept: application/json' \
  -H 'X-MSS-API-APPID: YOUR_APP_ID' \
  -H 'X-MSS-API-USERKEY: YOUR_USER_KEY' \
  -H 'X-MSS-CUSTOM-DATE: Mon, 06 Apr 2026 00:22:19 GMT' \
  -H 'X-MSS-SIGNATURE: BASE64_SIGNATURE'

import requests
from portal_auth import sign_request  # See authentication guide

url = "https://api.portal.io/public/webhook/unsubscribe/42"
timestamp = "Mon, 06 Apr 2026 00:22:19 GMT"
signature = sign_request("DELETE", url, "", timestamp, "YOUR_USER_KEY", "YOUR_SECRET_KEY")

response = requests.delete(url, headers={
    "Accept": "application/json",
    "X-MSS-API-APPID": "YOUR_APP_ID",
    "X-MSS-API-USERKEY": "YOUR_USER_KEY",
    "X-MSS-CUSTOM-DATE": timestamp,
    "X-MSS-SIGNATURE": signature
})
print(response.json())

const { signRequest } = require('./portalAuth'); // See authentication guide

const url = "https://api.portal.io/public/webhook/unsubscribe/42";
const timestamp = new Date().toUTCString();
const signature = signRequest("DELETE", url, "", timestamp, "YOUR_USER_KEY", "YOUR_SECRET_KEY");

const response = await fetch(url, {
    method: "DELETE",
    headers: {
        "Accept": "application/json",
        "X-MSS-API-APPID": "YOUR_APP_ID",
        "X-MSS-API-USERKEY": "YOUR_USER_KEY",
        "X-MSS-CUSTOM-DATE": timestamp,
        "X-MSS-SIGNATURE": signature
    }
});
const data = await response.json();
console.log(data);

{
  "success": true,
  "subscriptionId": 42
}