curl --request GET \
  --url https://api.useduro.com/v1/events/{id}/payload \
  --header 'Authorization: Bearer <token>'

{
  "id": "evt_01HKBZ4PQ9Z3K7T8V9X2Y1B5C6",
  "type": "checkout_completed",
  "createdAt": "<string>",
  "data": {
    "customer": {
      "id": "<string>",
      "email": "<string>",
      "phone": "<string>",
      "name": "<string>",
      "merchantRef": "<string>",
      "blacklisted": true,
      "blacklistReason": "<string>",
      "createdAt": "<string>"
    },
    "plan": {
      "id": "<string>",
      "name": "<string>",
      "amount": 123,
      "currency": "<string>",
      "intervalCount": 123,
      "trialDays": 123,
      "maxCycles": 123,
      "createdAt": "2023-11-07T05:31:56Z"
    },
    "subscription": {
      "id": "<string>",
      "planId": "<string>",
      "currentPeriodStart": "<string>",
      "currentPeriodEnd": "<string>",
      "cyclesCompleted": 123,
      "createdAt": "<string>"
    },
    "invoice": {
      "id": "<string>",
      "subscriptionId": "<string>",
      "amount": 123,
      "currency": "<string>",
      "periodStart": "<string>",
      "periodEnd": "<string>",
      "paidAt": "<string>",
      "createdAt": "<string>"
    }
  }
}