curl --request GET \
  --url https://api.voltview.co.uk/v1/suppliers/accounts/{id}/sites \
  --header 'x-api-key: <api-key>'

[
  {
    "id": "<string>",
    "accountId": "<string>",
    "referenceId": "<string>",
    "invoices": [
      {
        "id": "<string>",
        "filePath": "<string>",
        "extension": "<string>",
        "mpanMprn": "<string>",
        "supplierName": "<string>",
        "supplierAccountNumber": "<string>",
        "customerName": "<string>",
        "invoiceNumber": "<string>",
        "invoiceDate": "2023-12-25",
        "dueDate": "2023-12-25",
        "chargeStartDate": "2023-12-25",
        "chargeEndDate": "2023-12-25",
        "meterSerialNumber": "<string>",
        "siteAddress": "<string>",
        "paymentMethod": "<string>",
        "standingCharge": 123,
        "standingChargeType": "<string>",
        "cclRate": 123,
        "vatRate": 123,
        "readFromDate": "2023-12-25",
        "readToDate": "2023-12-25",
        "consumption": 123,
        "dayConsumption": 123,
        "nightConsumption": 123,
        "unitRate": 123,
        "dayUnitRate": 123,
        "nightUnitRate": 123,
        "correctionFactor": 123,
        "calorificValue": 123,
        "totalUnitCharge": 123,
        "totalStandingCharge": 123,
        "capacityCharge": 123,
        "amountDueNetOfVat": 123,
        "vat": 123,
        "totalAmount": 123
      }
    ],
    "contracts": [
      {
        "supplierAccountNumber": "<string>",
        "supplierName": "<string>",
        "supplierAddress": "<string>",
        "supplierCode": "<string>",
        "customerName": "<string>",
        "billingAddress": "<string>",
        "contractNumber": "<string>",
        "contractStartDate": "2023-12-25",
        "contractEndDate": "2023-12-25",
        "cclRate": 123,
        "isFixedContract": true,
        "isMarketRates": true,
        "isMicroBusiness": true,
        "paymentMethod": "<string>",
        "contractTermMonths": 123,
        "supplyPoints": [
          {
            "mpanMprn": "<string>",
            "meterSerialNumber": "<string>",
            "siteName": "<string>",
            "siteAddress": "<string>",
            "tariffName": "<string>",
            "isNonContractedRate": true,
            "standingCharge": 123,
            "standingChargeType": "<string>",
            "unitRate": 123,
            "dayUnitRate": 123,
            "nightUnitRate": 123,
            "estimatedAnnualConsumption": 123,
            "previous12MonthsConsumption": 123,
            "maximumImportCapacity": 123,
            "capacityRate": 123,
            "directDebitDiscount": 123,
            "brokerName": "<string>",
            "brokerUplift": 123,
            "vatRate": 123
          }
        ]
      }
    ],
    "creditNotes": [
      {
        "id": "<string>",
        "filePath": "<string>",
        "extension": "<string>"
      }
    ],
    "debitNotes": [
      {
        "id": "<string>",
        "filePath": "<string>",
        "extension": "<string>"
      }
    ],
    "certificates": [
      {
        "id": "<string>",
        "filePath": "<string>",
        "extension": "<string>"
      }
    ],
    "others": [
      {
        "id": "<string>",
        "filePath": "<string>",
        "extension": "<string>"
      }
    ],
    "loas": [
      {
        "id": "<string>",
        "filePath": "<string>",
        "extension": "<string>"
      }
    ]
  }
]