Update a transaction

curl --request PATCH \
  --url https://api.useproxy.ai/v1/transactions/{transactionId} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "memo": "<string>"
}
'

{
  "id": "<string>",
  "amount": 123,
  "customerId": "<string>",
  "cardId": "<string>",
  "agentId": "<string>",
  "type": "<string>",
  "status": "<string>",
  "currency": "<string>",
  "merchant": {
    "name": "<string>",
    "mcc": "<string>",
    "city": "<string>",
    "country": "<string>",
    "category": "<string>"
  },
  "memo": "<string>",
  "createdAt": "2023-11-07T05:31:56Z",
  "updatedAt": "2023-11-07T05:31:56Z"
}