{
  "operation": "PUT /v1/preferences",
  "request": {
    "partition": "main",
    "identifiers": [{ "name": "email", "value": "jane@example.com" }],
    "records": [
      {
        "purpose": "Marketing",
        "preference": "EmailOptIn",
        "value": true,
        "timestamp": "2026-05-25T17:21:04Z"
      }
    ]
  },
  "response": { "status": "OK", "updated": 1 }
}