{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "#/components/schemas/CampaignRecipient",
  "title": "CampaignRecipient",
  "type": "object",
  "properties": {
    "email": {
      "type": "string",
      "format": "email",
      "description": "Recipient email address.",
      "example": "user@example.com"
    },
    "lead_id": {
      "type": [
        "integer",
        "null"
      ],
      "description": "Associated lead identifier.",
      "example": "500123"
    },
    "sending_status": {
      "type": "string",
      "description": "Current sending status for this recipient.",
      "example": "example_value"
    }
  }
}