curl --request POST \
  --url https://firstpromoter.com/api/v1/track/cancellation \
  --header 'X-API-KEY: <api-key>'

{
  "id": 33848911,
  "type": "cancellation",
  "amount_cents": null,
  "reward": null,
  "lead": {
    "id": 20738339,
    "state": "cancelled",
    "email": "hello@testmintli.com",
    "uid": null,
    "customer_since": "2024-09-11T14:22:12.160Z",
    "cancelled_at": "2024-09-11T15:07:46.174Z",
    "plan_name": null,
    "suspicion": "no_suspicion",
    "username": null,
    "website": null,
    "created_at": "2024-09-09T16:22:44.168Z",
    "split_promotion_id": null,
    "custom_fields": null,
    "split_percentage_value": null,
    "visitor_sub_id": null
  },
  "promoter": {
    "id": 3920164,
    "status": "active",
    "cust_id": "",
    "email": "peluwydo@mailinator.com",
    "created_at": "2022-04-26T15:28:24.800Z",
    "temp_password": "xxxxxxxxxx",
    "default_promotion_id": 4210919,
    "pref": "db1znwe",
    "default_ref_id": "8yi2epelut",
    "note": "This is a note",
    "w8_form_url": null,
    "w9_form_url": null,
    "parent_promoter_id": 577918,
    "earnings_balance": {
      "cash": 50744
    },
    "current_balance": {
      "cash": 20044
    },
    "paid_balance": {
      "cash": 30700
    },
    "auth_token": "xxxxxxxxxxxxxx"
  }
}