curl --request PATCH \
  --url https://api.example.com/v1/cases/{case_id}/bank-accounts/{account_id}/transactions/{transaction_id} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "category": "income",
  "is_flagged": true,
  "flag_reason": "suspicious",
  "notes": "<string>"
}
'

{
  "data": {
    "id": "01K6TX03CJ1T88HRYE78AN7VWX",
    "date": "2025-09-15",
    "posted_date": "2025-09-16",
    "effective_date": "2023-12-25",
    "type": "debit",
    "amount": -150,
    "running_balance": 15080.5,
    "description": "Electric Company Payment",
    "merchant_name": "Springfield Electric Co.",
    "reference_number": "REF-2025-09-15-001",
    "check_number": null,
    "category": "bills",
    "is_recurring": true,
    "is_flagged": false,
    "flag_reason": "suspicious",
    "notes": "<string>",
    "created_at": "2023-11-07T05:31:56Z",
    "updated_at": "2023-11-07T05:31:56Z"
  }
}