query GetCustomerById($customerId: ID!) {
  GetCustomerById(customerId: $customerId) {
    customerId
    customerGroupId
    customerNumber
    createdDate
    lastChanged
    customerAddresses {
      customerAddressId
      customerId
      isDefault
      addressType
      companyName
      additionalCompanyLine
    }
  }
}

{
  "customerId": "id"
}

{
  "data": {
    "GetCustomerById": {
      "customerId": "id",
      "customerGroupId": "id",
      "customerNumber": "string",
      "createdDate": "value",
      "lastChanged": "value",
      "customerAddresses": [
        {
          "customerAddressId": "id",
          "customerId": "id",
          "isDefault": true,
          "addressType": "SHIPMENT_ADDRESS",
          "companyName": "string",
          "additionalCompanyLine": "string"
        }
      ]
    }
  }
}