type `WalletBalance`

`wallet_api.v1.WalletBalance`

Field	Type	Description
amount	Amount	Sum of a particular currency available in the wallet.
file_count	int64	Total count of a particular banknote

{
  "amount": {
    "currency_code": "USD",
    "amount": 100,
    "decimals": 2
  },
  "file_count": 57
}