curl --request GET \
  --url https://api.service.getjusto.com/v3/royalty/clients-loyalty-balance

{
  "success": true,
  "data": {
    "items": [
      {
        "clientId": "rty-cli-001",
        "justoUserId": "u-001",
        "balance": 150
      }
    ],
    "hasNextPage": true,
    "hasPreviousPage": true,
    "totalPages": 123,
    "totalCount": 123
  }
}