{
  "summary": "Update a broadcast",
  "method": "PUT",
  "path": "/v4/broadcasts/{id}",
  "tag": "Broadcasts",
  "request_body": {
    "email_template_id": 1,
    "email_address": "string",
    "content": "string",
    "description": "string",
    "public": true
  },
  "response": {
    "broadcast": {
      "id": 1,
      "publication_id": 1,
      "created_at": "string",
      "subject": "string",
      "preview_text": "string"
    }
  }
}