3DS Challenge webhook event

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "#/components/schemas/challenge-event",
  "title": "3DS Challenge webhook event",
  "type": "object",
  "description": "Represents a challenge event that is emitted after issuing a 3DS challenge",
  "properties": {
    "authentication_object": {
      "$ref": "#/components/schemas/authentication"
    },
    "challenge": {
      "$ref": "#/components/schemas/challenge"
    },
    "event_type": {
      "const": "three_ds_authentication.challenge"
    }
  },
  "required": [
    "authentication_object",
    "challenge",
    "event_type"
  ]
}