curl --request POST \
  --url https://vip.xmsmartlink.com/v1/models/{model}:predictLongRunning \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "instances": [
    {
      "prompt": "A cinematic shot of a bronze mechanical bird unfolding its wings on a rainy rooftop at dusk.",
      "image": {
        "bytesBase64Encoded": "BASE64_IMAGE_DATA",
        "mimeType": "image/png"
      },
      "lastFrame": {
        "bytesBase64Encoded": "BASE64_LAST_FRAME",
        "mimeType": "image/png"
      }
    }
  ],
  "parameters": {
    "sampleCount": 1,
    "durationSeconds": 8,
    "aspectRatio": "16:9",
    "resolution": "1080p",
    "negativePrompt": "blurry, watermark",
    "generateAudio": false,
    "enhancePrompt": true
  }
}
'

{
  "name": "models/veo-3.1-fast-generate-preview/operations/task_xxxxxxxxxxxxxxxx",
  "done": false
}