{
  "Version": "2012-10-17",
  "Statement": {
    "Effect": "Allow",
    "Principal": {"AWS": "123456789012"},
    "Action": "SQS:SendMessage",
    "Resource": "arn:aws:sqs:REGION:123456789012:QUEUE-ID",
    "Condition": {"ArnEquals": {"aws:SourceArn": "arn:aws:sns:REGION:123456789012:TOPIC-ID"}}
  }
}