A Hanger (recordType) is a section of a Drawer (sidedrawer). For example, within a Drawer, you may have a Hanger for Tax Documents and another Hanger for Legal documents. 
Within a Hanger, Folders (record) can be created, and these can contain files (recordFile).
More info about the organization of entities here.
[
  {
    "id": "{hangerId}",
    "name": "legalFiles",
    "logo": "",
    "sidedrawerType": "individual",
    "sidedrawerTypeOtherName": "",
    "displayValue": [
      {
        "locale": "en-CA",
        "value": "Legal Documents",
        "description": ""
      }
    ],
    "cobrandId": "{cobrandId}",
    "orderId": 0
  }
]
Hanger (recordType) entity
recordType) entityid   string required  
Unique Hanger (recordType) identifier.
name   string  required 
Hanger (recordType) name.
logo   string required  
URL of the logo to display for the Hanger.
sidedrawerType  string 
Drawer (sidedrawer) type. 
Default: individual.
sidedrawerTypeOtherName  string 
Drawer (sidedrawer) type if sidedrawerType = "other".
displayValue   array of Display Value entities required 
List of values to display, depending on the language.
cobrandId  string 
Unique cobrand identifier.
orderId  number 
Number of the position of this Hanger (recordType) when the Hangers are sorted in a list.
Display Value (displayValue) entity
displayValue) entitylocale   enum  required 
Locale. 
Possible values: en-CA, fr-CA, en-US, es-US.
value   string  required 
Value of display.
description  string 
Description.
