WalletsAPI.CustomersIdWalletsGet(context, id).Execute() function returning error

## Problem Summery
`WalletsAPI.CustomersIdWalletsGet(context, id).Execute()` function returning error:
```
json: cannot unmarshal string into Go struct field DtoWalletResponse.balance of type float32
```

## Root Cause
api json response returning string value, but struct data type in float32, conversion not applied properly