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ruleset org.sovrin.wire_message {
  ...
  rule on_installation {
    select when wrangler ruleset_added where event:attr("rids") >< meta:rid
    pre {
      wire_message = event:attrattrs("rs_attrs")
      se = wire_message{"serviceEndpoint"}
      pm = wire_message{"packedMessage"}
    }
    if wire_message then noop()
    fired {
      raise sovrin event "new_ssi_agent_wire_message" attributes {
        "serviceEndpoint": se, "packedMessage": pm
       }
    }
  }
  rule send_ssi_agent_wire_message {
    select when sovrin new_ssi_agent_wire_message
    ...
  }
}