const response = await fetch('https://polza.ai/api/v1/media', {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer <POLZA_AI_API_KEY>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    model: 'topaz/image-upscale',
    input: {
      prompt: 'Измени фон на закат над морем',
      aspect_ratio: '16:9',
      images: [
        { type: 'url', data: 'https://example.com/photo.jpg' }
      ]
    }
  })
});

const result = await response.json();
console.log(result);