messages.js

{
  content: [
    {
      source: {
        data: imageData,
        media_type: 'image/jpeg',
        type: 'base64'
      },
      type: 'image'
    },
    {
      text: `Return your response as the following JSON:
      {
        "description": "Please describe the objects in this image and if there's any damage"
      }`,
      type: 'text'
    }
  ],
  role: 'user'
}