{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "#/components/schemas/Campaign",
  "title": "Campaign",
  "type": "object",
  "description": "An advertising campaign.",
  "properties": {
    "id": {
      "type": "string",
      "description": "Campaign ID.",
      "example": "400001234567890"
    },
    "name": {
      "type": "string",
      "description": "Campaign name.",
      "example": "Spring Sale 2026"
    },
    "objective": {
      "type": "string",
      "description": "Campaign objective.",
      "example": "OUTCOME_SALES"
    },
    "status": {
      "type": "string",
      "description": "Campaign status.",
      "enum": [
        "ACTIVE",
        "PAUSED",
        "DELETED",
        "ARCHIVED"
      ],
      "example": "ACTIVE"
    },
    "daily_budget": {
      "type": "string",
      "description": "Daily budget in cents.",
      "example": "5000"
    },
    "lifetime_budget": {
      "type": "string",
      "description": "Lifetime budget in cents."
    },
    "created_time": {
      "type": "string",
      "format": "date-time",
      "description": "Campaign creation time."
    },
    "updated_time": {
      "type": "string",
      "format": "date-time",
      "description": "Campaign last update time."
    }
  }
}