https://portaldev.eonpayments.com/api/v01/users/[user-name]/default-merchant                
            Represents information on the default Merchant, associated with the given user.
                                                                        | Method: POST | Implicit: No | Returns: ServiceResponse | 
| Consumes: json, xml | Produces: json, xml | |
| 
                                     
                                        Attaches default merchant to a user. A single default merchant can be associated with a single user. 
                                 | 
                            ||
| # | Name | Type | Required | Default | Description | 
|---|---|---|---|---|---|
| 01 | code | Integer | Yes | 
                                                                                                                        Identifier of a merchant or account that is going to be set as default for the specified user. |