{
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  "receivedAt": "2026-08-24T10:30:06Z",
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  "invalid": 1,
  "results": [
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    { "eventId": "ACME-ABC123456789-000041", "outcome": "DUPLICATE" },
    { "eventId": "ACME-ZZZ999999999-000001", "outcome": "UNKNOWN_TRACKING" },
    {
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      "outcome": "INVALID",
      "errors": ["occurredAt: not a valid ISO 8601 date-time"]
    }
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}