Retrieves a transaction via it's paid merchant order
{- "_id": "tran_aACpsH770TWS4tJ7",
- "merchantId": "mcht_aACpsH770TWS4tJ4",
- "customerId": "cust_aACpsH770TWS4tJ5",
- "merchantOrderId": "ordr_aACpsH770TWS4tJ8",
- "transactionPayType": {
- "payCardId": "card_aACps3770TWS4tKT"
}, - "amount": 0,
- "currency": "AUD",
- "surchargeAmount": 0,
- "status": "accepted",
- "statusBeforeDispute": "accepted",
- "lastChargeId": "chrg_aACpsH770TWS4tJ9",
- "refundedAmount": 0,
- "payoutId": "payout_aACpsX770TWS4tKE",
- "createdAt": "2019-08-24T14:15:22Z",
- "updatedAt": "2019-08-24T14:15:22Z",
- "fee": 0
}