{ "rules_conditional_test" : {
    "LABEL" : "conditional test",
    "PLUGIN" : "rule",
    "REQUIRES" : [ "rules_conditional", "rules" ],
    "USES VARIABLES" : { "uid" : { "label" : "User #", "type" : "integer" } },
    "DO" : [
      { "CONDITIONAL" : [
          {
            "IF" : { "data_is" : { "data" : [ "site:current-user:uid" ], "value" : [ "uid" ] } },
            "DO" : [ { "drupal_message" : { "message" : "You are user #[uid]." } } ]
          },
          { "ELSE" : [ { "drupal_message" : { "message" : "You are not user #[uid]." } } ] }
        ]
      }
    ]
  }
}