curl --request POST \
  --url https://varco-{partner}.musixmatch.com/distribution/deliveries/files \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "musixmatch_user_id": "mxm:123456789012345678901"
}
'

{
  "message": {
    "body": {
      "file": {
        "file_id": 123456,
        "upload_url": "https://storage.example.com/uploads/123456?signature=..."
      }
    },
    "header": {
      "status_code": 201,
      "execute_time": 0.06
    }
  }
}