Decrypting Terraform Output with Keybase

In my terraform code I have:

resource "aws_iam_access_key" "this" {
  user    = aws_iam_user.this.name
  pgp_key = "keybase:jonnymccullagh"
}

And after running the terraform apply I get an encrypted IAM secret key. To decrypt the string:

echo "wcFMA+32longstring1wA=" | base64 --decode | keybase pgp decrypt