User

Information known or derived about the human user of the device. The user id is an exchange artifact and may be subject to rotation or other privacy policies. Keep the user id stable long enough to serve as the basis for attribution or personalization use cases.

idstringrequired

User identifier for which FCC serves the ad impression.

Example: C785902B8150944B

User

{
  "id": "C785902B8150944B"
}