type: object
properties:
  identifier:
    type: string
    description: External identifier of the contact
  identifier_hash:
    type: string
    description: Identifier hash prepared for HMAC authentication
  email:
    type: string
    description: Email of the contact
  name: 
    type: string
    description: Name of the contact
  avatar_url:
    type: string
    description: The url to a jpeg, png file for the user avatar
  custom_attributes:
    type: object
    description: Custom attributes of the customer