Set domain configuration

Example request

{
  "properties": {
    "transcription_bucket": {
      "bucket_name": "my-daily-recording",
      "bucket_region": "ap-south-1",
      "assume_role_arn": "arn:aws:iam::555555555555:role/DailyS3AccessRole"
    },
    "recordings_bucket": {
      "bucket_name": "my-daily-recording",
      "bucket_region": "ap-south-1",
      "assume_role_arn": "arn:aws:iam::555555555555:role/DailyS3AccessRole"
    }
  }
}