curl --request POST \
  --url https://postonce.to/api/public/v1/posts/{id}/cancel \
  --header 'Authorization: Bearer <token>'

{
  "data": {
    "id": "<string>",
    "content": "<string>",
    "external_id": "<string>",
    "media": [
      {
        "url": "https://cdn.example.com/launch-image.png",
        "type": "image",
        "width": 123,
        "height": 123,
        "size": 123
      }
    ],
    "publish_at": "2023-11-07T05:31:56Z",
    "status": "scheduled",
    "created_at": "2023-11-07T05:31:56Z",
    "targets": [
      {
        "target_post_id": "<string>",
        "account_id": "<string>",
        "platform": "<string>",
        "username": "<string>",
        "status": "pending",
        "error": "<string>",
        "platform_post_id": "<string>",
        "platform_post_url": "<string>",
        "scheduled_time": "2023-11-07T05:31:56Z"
      }
    ]
  }
}