A single User can have one or more brokerage Accounts. There are a few attributes that define the account, how and when it can trade, and who has trading authority.
{
"id": "cc07f91b-7ee1-4868-b8fc-823c70a1b932.1407775317759",
"accountNo": "DPKU000001",
"accountType": {
"name": "LIVE",
"description": "Live Account"
},
"accountMgmtType": {
"name": "SELF",
"description": "Self Directed Account"
},
"status": {
"name": "OPEN",
"description": "Open"
},
"tradingType": {
"name": "CASH",
"description": "Cash account"
},
"leverage": 1,
"nickname": "John Smith's Practice Account",
"parentIB": {
"id": "80f9b672-120d-4b73-9cc9-42fb3262c4b9",
"name": "DriveWealth"
},
"commissionID": "449d41b9-3940-41ff-b0e6-334adfb443f8",
"userID": "cc07f91b-7ee1-4868-b8fc-823c70a1b932",
"restricted": false,
"goodFaithViolations": 0,
"patternDayTrades": 0,
"freeTradeBalance": 0,
"gfvPdtExempt": false,
"buyingPowerOverride": false,
"sweepInd": true,
"interestFree": false,
"createdWhen": "2014-08-11T16:41:57.758Z",
"openedWhen": "2014-08-11T16:41:57Z"
}