curl --request POST \
  --url https://vantage-us.abbyy.com/api/publicapi/v1/transactions/launch \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: multipart/form-data' \
  --form 'Files=<string>' \
  --form 'Model={
  "files": [
    {
      "imageProcessingOptions": {},
      "index": "<string>",
      "registrationParameters": [
        {
          "key": "<string>",
          "value": "<string>"
        }
      ]
    }
  ],
  "registrationParameters": [
    {
      "key": "<string>",
      "value": "<string>"
    }
  ],
  "skillParameters": [
    {
      "key": "<string>",
      "value": "<string>"
    }
  ]
}' \
  --form Files.items='@example-file'

{
  "transactionId": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
}