{
    "greengrass": {
        "Effect": "Allow",
        "Action": [
          "greengrass:*"
        ],
        "Resource": [
          "*"
        ]
      },
    "roleAlias": {
        "Effect": "Allow",
        "Action": [
        "iot:AssumeRoleWithCertificate"
        ],
        "Resource": [""]
    }
}