{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "title": "campaign_update",
  "type": "object",
  "allOf": [
    {
      "$ref": "#/components/schemas/campaign_base"
    },
    {
      "type": "object",
      "properties": {
        "version": {
          "type": "integer",
          "format": "int32",
          "example": 4
        },
        "goals": {
          "$ref": "#/components/schemas/campaign_goals"
        },
        "budget": {
          "allOf": [
            {
              "$ref": "#/components/schemas/campaign_budget"
            },
            {
              "required": [
                "currency_code",
                "flights"
              ],
              "properties": {
                "flights": {
                  "type": "array",
                  "minItems": 1,
                  "items": {
                    "$ref": "#/components/schemas/campaign_budget_flights"
                  }
                }
              }
            }
          ]
        },
        "frequency": {
          "$ref": "#/components/schemas/campaign_frequency"
        },
        "inventory": {
          "$ref": "#/components/schemas/campaign_inventory"
        },
        "site_lists": {
          "type": "array",
          "items": {
            "type": "object",
            "required": [
              "id",
              "assigned"
            ],
            "properties": {
              "id": {
                "type": "integer",
                "format": "int32",
                "example": 23
              },
              "assigned": {
                "type": "boolean"
              }
            }
          }
        },
        "custom_brain_selections": {
          "type": "array",
          "items": {
            "type": "object",
            "properties": {
              "selection_id": {
                "type": "integer",
                "format": "int32",
                "example": 45
              },
              "selection_type": {
                "enum": [
                  "Audience Target",
                  "Data Pixel",
                  "Event Pixel",
                  "Segment",
                  "Dynamic"
                ]
              }
            }
          }
        }
      }
    }
  ]
}