{
  "data_types" : {
    "dt-echo-properties" : {
      "description" : "Dynamic DataType definition for workflow(echo).",
      "version" : "1.0.0",
      "properties" : {
        "echoed-message" : {
          "type" : "string"
        }
      },
      "derived_from" : "tosca.datatypes.Dynamic"
    }
  }
}