{
  "identities": [
    {
      "name": "admin_user",
      "credentials": [
        {
          "accessKey": "admin_access_key",
          "secretKey": "admin_secret_key"
        }
      ],
      "actions": ["Admin", "Read", "Write"]
    },
    {
      "name": "read_only_user",
      "credentials": [
        {
          "accessKey": "readonly_access_key",
          "secretKey": "readonly_secret_key"
        }
      ],
      "actions": ["Read"]
    }
  ]
}