List Invoices for Client

curl --request GET \
  --url https://api.sandbox.flowpayroll.ai/v1/billing/clients/{clientId}/invoices \
  --header 'X-Auth-Token: <api-key>'

{
  "content": {
    "data": {
      "invoices": [
        {
          "id": "<string>",
          "organisationId": "<string>",
          "clientId": "<string>",
          "amount": 123,
          "lineAmountTypes": "<string>",
          "subTotal": 123,
          "totalTax": 123,
          "totalCreditAmount": 123,
          "balanceDue": 123,
          "currencyCode": "<string>",
          "appliedCredits": [
            {
              "creditNoteId": "<string>",
              "amountApplied": 123,
              "appliedDate": "<string>"
            }
          ],
          "groupingKey": "<string>",
          "invoiceFormatTagGroup": "<string>",
          "invoiceFormatTagName": "<string>",
          "date": "<string>",
          "dueDate": "<string>",
          "invoiceNumber": "<string>",
          "reference": "<string>",
          "attachments": [
            {
              "id": "<string>",
              "fileName": "<string>",
              "url": "<string>",
              "description": "<string>",
              "s3Key": "<string>",
              "contentType": "<string>",
              "fileSize": 123,
              "uploadedDate": "<string>",
              "uploadedBy": "<string>",
              "downloadUrl": "<string>",
              "downloadUrlExpiresAt": "<string>"
            }
          ],
          "lineItemAttachmentCount": 123,
          "linesWithoutAttachmentsCount": 123,
          "linesWithoutPoNumberCount": 123,
          "lineItems": [
            {
              "id": "<string>",
              "invoiceId": "<string>",
              "organisationId": "<string>",
              "clientId": "<string>",
              "employeeId": "<string>",
              "employeeName": "<string>",
              "description": "<string>",
              "amount": 123,
              "payElementId": "<string>",
              "units": 123,
              "chargeRate": 123,
              "chargeUnits": 123,
              "chargeValue": 123,
              "date": "<string>",
              "tags": [
                {
                  "name": "<string>",
                  "group": "<string>",
                  "value": "<string>"
                }
              ],
              "createdDate": "<string>",
              "createdBy": "<string>",
              "attachments": [
                {
                  "id": "<string>",
                  "lineItemId": "<string>",
                  "filename": "<string>",
                  "contentType": "<string>",
                  "fileSize": 123,
                  "uploadedDate": "<string>",
                  "uploadedBy": "<string>",
                  "s3Key": "<string>",
                  "source": "<string>",
                  "downloadUrl": "<string>",
                  "downloadUrlExpiresAt": "<string>"
                }
              ],
              "payElementDescription": "<string>",
              "accountCode": "<string>",
              "taxType": "<string>",
              "quantity": 123,
              "unitAmount": 123,
              "lineAmount": 123,
              "taxAmount": 123,
              "poNumber": "<string>"
            }
          ],
          "subtotalGroups": [
            {
              "label": "<string>",
              "amount": 123,
              "taxAmount": 123,
              "totalAmount": 123,
              "sortOrder": 123
            }
          ],
          "tags": [
            {
              "name": "<string>",
              "group": "<string>",
              "value": "<string>"
            }
          ],
          "externalId": "<string>",
          "externalProvider": "<string>",
          "lastSyncedAt": "<string>",
          "syncStatus": "<string>",
          "syncErrorMessage": "<string>",
          "syncErrorCode": "<string>",
          "externalProviderStatus": "<string>",
          "emailSent": true,
          "emailSentAt": "<string>",
          "emailSentBy": "<string>",
          "createdDate": "<string>",
          "createdBy": "<string>",
          "updatedDate": "<string>",
          "updatedBy": "<string>"
        }
      ],
      "paginationToken": "<string>",
      "hasMorePages": true,
      "pageSize": 123
    },
    "metadata": {
      "dateFormat": "<string>",
      "dateTimeFormat": "<string>"
    }
  },
  "metadata": {
    "dateFormat": "<string>",
    "dateTimeFormat": "<string>"
  },
  "errors": [
    {
      "field": "<string>",
      "reasonText": "<string>",
      "reasonId": "<string>",
      "reasonParameters": [
        {
          "key": "<string>",
          "value": "<string>"
        }
      ]
    }
  ],
  "message": {
    "text": "<string>",
    "textId": "<string>",
    "textParameters": [
      {
        "key": "<string>",
        "value": "<string>"
      }
    ]
  }
}