Account Activity API register fail



Account Activity API register fail.
I did try to using oauth1.0a and application only authentication.

only received {“errors”:[{“code”:200,“message”:“Forbidden.”}]} response.

How can i solve it? I did submit form to use beta api.

My owner ID is 944934436537221121

var nconf = require('nconf')
var request = require('request')

// load config
nconf.file({ file: 'config.json' }).env()

var twitter_oauth = {
  consumer_key: nconf.get('TWITTER_CONSUMER_KEY'),
  consumer_secret: nconf.get('TWITTER_CONSUMER_SECRET'),
  token: nconf.get('TWITTER_ACCESS_TOKEN'),
  token_secret: nconf.get('TWITTER_ACCESS_TOKEN_SECRET')

var WEBHOOK_URL = 'my webhook url';

var request_options = {
  url: '',
  oauth: twitter_oauth,
  headers: {
    'Content-type': 'application/x-www-form-urlencoded'
  form: {
    url: encodeURI(WEBHOOK_URL)
}, function (err, response, body) {