Retrieves a transaction via it's paid merchant order
{- "_id": "tran_aRWRVw3OHB1ElGHK",
- "merchantId": "mcht_aRWRVw3OHB1ElGHH",
- "customerId": "cust_aRWRVw3OHB1ElGHI",
- "merchantOrderId": "ordr_aRWRVw3OHB1ElGHL",
- "transactionPayType": {
- "payCardId": "card_aRWRXQ3OHB1ElGHj"
}, - "amount": 0,
- "currency": "AUD",
- "surchargeAmount": 0,
- "status": "accepted",
- "statusBeforeDispute": "accepted",
- "lastChargeId": "chrg_aRWRVw3OHB1ElGHM",
- "refundedAmount": 0,
- "payoutId": "payout_aRWRWQ3OHB1ElGHT",
- "createdAt": "2019-08-24T14:15:22Z",
- "updatedAt": "2019-08-24T14:15:22Z",
- "fee": 0
}