curl --request POST \
  --url https://api.ttapi.io/midjourney/v1/blend \
  --header 'Content-Type: application/json' \
  --header 'TT-API-KEY: <api-key>' \
  --data '
{
  "imgBase64Array": [
    "data:image/png;base64,xxx1",
    "data:image/png;base64,xxx2"
  ],
  "mode": "fast",
  "dimensions": "PORTRAIT",
  "timeout": "300",
  "hookUrl": "<string>"
}
'

{
  "status": "SUCCESS",
  "message": "success",
  "data": {
    "job_id": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
  }
}