get https://{youraccountname}.api-us1.com/api/3/users/username/
Retrieve an existing user by looking up their username
{
"user": {
"username": "admin",
"firstName": "John",
"lastName": "Doe",
"email": "[email protected]",
"phone": "",
"signature": null,
"links": {
"lists": "https://:account.api-us1.com/api/3/users/1/lists",
"userGroup": "https://:account.api-us1.com/api/3/users/1/userGroup",
"dealGroupTotals": "https://:account.api-us1.com/api/3/users/1/dealGroupTotals",
"dealGroupUsers": "https://:account.api-us1.com/api/3/users/1/dealGroupUsers",
"configs": "https://:account.api-us1.com/api/3/users/1/configs"
},
"id": "1"
}
}