Allows adding a user to an account
| Argument | Data Type | Required | Description |
| username | string | Yes | username of the new user |
| password | string | Yes | password of the new user |
| firstname | string | Yes | firstname of the user |
| lastname | string | Yes | lastname of the user |
| address | string | Yes | address of the user |
| city | string | Yes | city of the user |
| region | string | Yes | state/region of the user |
| zip | string | Yes | zipcode/postal code of the user |
| country | string | Yes | two digit country code of the user |
| phone | string | Yes | phone number of the user |
| XML Response | JSON Response |
| <response> <success>User Added</success> <userid>1</userid> </response> |
{
"success": "User Added",
"userid": "1"
} |