{
  "openabtest": "0.1-draft",
  "producerId": "chovy-server",
  "manifestId": "chovy-signup-discount-v1",
  "manifestRevision": 1,
  "participantId": "participant-opaque-7d12",
  "at": "2026-09-15T12:00:00Z",
  "id": "event-adjustment-42",
  "kind": "adjustment",
  "payload": {
    "assignmentId": "assignment-42",
    "variantId": "signup-10",
    "conversionId": "purchase-42",
    "adjustmentId": "refund-42",
    "currency": "USD",
    "amountMinor": -3600,
    "reason": "refund",
    "proofRefs": [
      "refund-proof-42"
    ]
  }
}