model

type Rate struct {
	ID             int       `json:"id" example:"1"`
	FirstCurrency  string    `json:"first_currency" example:"RUB"`
	SecondCurrency string    `json:"second_currency" example:"USD"`
	Value          float32   `json:"value" example:"75.4"`
	LastUpdateTime time.Time `json:"last_update_time" example:"2019-11-09T21:21:46+00:00"`
}