public async Task <IActionResult> PostFillRates() { var cryptoCurrencies = new List <CryptoCurrency> { CryptoCurrency.BTC, CryptoCurrency.ETH, CryptoCurrency.LTC, CryptoCurrency.BCH }; var result = await _manager.FillRates(cryptoCurrencies); if (!result) { throw new Exception("Some data was not found."); } return(NoContent()); }