A type monexDescription cointains a description of a single coin.
| Name | Type | Description | Required? |
| id | string | an identifier of the coin | Yes |
| value | string | the value of the coin | Yes |
| currency | string | currency | Yes |
| expirationDate | string | a date of expiry of the coin | Yes |
| incomingDate | string | a date of receipt of the coin | Yes |
| issuingDate | string | a creation date of the coin | Yes |