Retrieves a transaction
{- "_id": "tran_aPGj02kW7AepT_v3",
- "merchantId": "mcht_aPGj0mkW7AepT_v0",
- "customerId": "cust_aPGj0mkW7AepT_v1",
- "merchantOrderId": "ordr_aPGj02kW7AepT_v4",
- "transactionPayType": {
- "payCardId": "card_aPGj12kW7AepT_wQ"
}, - "amount": 0,
- "currency": "AUD",
- "surchargeAmount": 0,
- "status": "accepted",
- "statusBeforeDispute": "accepted",
- "lastChargeId": "chrg_aPGj02kW7AepT_v5",
- "refundedAmount": 0,
- "payoutId": "payout_aPGj02kW7AepT_wA",
- "createdAt": "2019-08-24T14:15:22Z",
- "updatedAt": "2019-08-24T14:15:22Z",
- "fee": 0
}