{
  "type": "lead_forms_new",
  "group_id": 123456,
  "secret": "replace_with_callback_secret",
  "object": {
    "lead_id": 987654321,
    "form_id": 111,
    "user_id": 222333,
    "answers": [
      {
        "key": "name",
        "answer": "Антон"
      },
      {
        "key": "phone",
        "answer": "+7 (916) 123-45-67"
      },
      {
        "key": "email",
        "answer": "anton@example.ru"
      }
    ]
  },
  "utm_source": "vk",
  "utm_campaign": "lead_form_may"
}