curl --request GET \
  --url https://api.portalhq.io/api/v3/clients/me/integrations/meld/retail/transactions/{id} \
  --header 'Authorization: Bearer <token>'

{
  "data": {
    "transaction": {
      "id": "<string>",
      "sessionId": "<string>",
      "status": "<string>",
      "transactionType": "<string>",
      "serviceProvider": "<string>",
      "createdAt": "2023-11-07T05:31:56Z",
      "updatedAt": "2023-11-07T05:31:56Z",
      "externalSessionId": "<string>",
      "externalCustomerId": "<string>",
      "sourceAmount": 123,
      "sourceCurrencyCode": "<string>",
      "destinationAmount": 123,
      "destinationCurrencyCode": "<string>",
      "destinationWalletAddress": "<string>",
      "paymentMethodType": "<string>",
      "cryptoPurchaseDetails": {},
      "serviceProviderDetails": {}
    }
  }
}