{
  "@context" : {
    "lti" : "http://purl.imsglobal.org/vocab/lti/v2/lti#",
    "lti-type" : "http://purl.imsglobal.org/xsd/lti/v2/ltid#",
    "GUID.Type" : "lti-type:GUID.Type",
    "ToolProxy" : "lti:ToolProxy",
    "tool_proxy_guid" : {
      "@id" : "lti:tool_proxy_guid",
      "@type" : "lti-type:GUID.Type"
    }
  },
  "@id" : "http://purl.imsglobal.org/ctx/lti/v2/ToolProxyId"
}