{
  "payerId": "BCBS001",
  "patient": {
    "firstName": "Jane",
    "lastName": "Smith"
  },
  "subscriber": {
    "memberId": "MEM123456"
  },
  "provider": {
    "npi": "1234567890"
  },
  "certificationNumber": "AUTH-2025-001234",
  "attachments": [
    {
      "contentType": "application/pdf",
      "title": "Clinical Notes",
      "data": "SGVsbG8gV29ybGQ="
    }
  ]
}