{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Action": "sts:AssumeRole",
      "Principal": { "AWS": "arn:${aws_partition}:iam::${account_id}:root" },
      "Effect": "Allow",
      "Sid": "",
      "Condition": {
        "Bool": {
          "aws:MultiFactorAuthPresent": "true"
        }
      }
    }
  ]
}