v2/customers/balance
| Code | Response | Type | Status |
|---|---|---|---|
| success | true | boolean | 200 Ok |
| message | Current balance | string | 200 Ok |
| balance | <current_balance> | string | 200 Ok |
| Code | Response | Status |
|---|---|---|
| success | false | 400 Bad Request |
| message | Get balance exception error | 400 Bad Request |