LR 2.0 "merged" envelope returned from API - see line 8 for sample concept

merged envelope.json

{
  "@id": "http://docsteach.org/activities/16/detail",
  "@type": "CreativeWork",
  "name": "The Constitution at Work",
  "thumbnailUrl": "http://docsteach.org/assets/lesson/000/000/022/22_medium.jpg",
  "url": "http://docsteach.org/activities/16/detail",
  "description": "In this activity students will analyze documents that span the course of American history to determine their connection to the U.S. Constitution. Students will then make connections between the documents they have examined and the big ideas found within the Constitution.",
  "typicalAgeRange": 
  [
    {"value": "13-18",
    "identity": {
      "email": "joe hobson <joe@navigationnorth.com>",
      "doc_id": "abc-xyz"
    }}, 
    {"value": "11-15",
      "identity": {
      "email": "steve midgley <steve@learningtapestry.com>",
      "doc_id": "123-456"
    }}
  ],
  "keywords": "History",
  "educationalAlignment": [
    {
      "@type": "AlignmentObject",
      "alignmentType": "educationLevel",
      "educationalFramework": "US K-12 Grade Levels",
      "targetName": "8-12"
    },
    {
      "@type": "AlignmentObject",
      "alignmentType": "assesses",
      "educationalFramework": "Common Core State Standards for English Language Arts",
      "targetName": "CCSS.ELA-Literacy.RH.6-8.1",
      "targetUrl": "http://corestandards.org/ELA-Literacy/RH/6-8/1"
    },
    {
      "@type": "AlignmentObject",
      "alignmentType": "teaches",
      "educationalFramework": "Common Core State Standards for English Language Arts",
      "targetName": "CCSS.ELA-Literacy.RH.6-8.1",
      "targetUrl": "http://corestandards.org/ELA-Literacy/RH/6-8/1"
    },
    {
      "@type": "AlignmentObject",
      "alignmentType": "requires",
      "educationalFramework": "Common Core State Standards for English Language Arts",
      "targetName": "CCSS.ELA-Literacy.RH.6-8.1",
      "targetUrl": "http://corestandards.org/ELA-Literacy/RH/6-8/1"
    }
  ],
  "dateCreated": "2010-05-20",
  "dateModified": "2015-11-24",
  "language": "English",
  "mediaType": [
    "Document",
    " Image"
  ],
  "learningResourceType": "learning activity",
  "interactivityType": "Interactive",
  "useRightsUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
  "accessRights": "https://ceds.ed.gov/element/001561#FreeAccess",
  "author": {
    "@type": "Organization",
    "name": "National Archives Education Team",
    "url": "http://www.archives.gov/education/",
    "email": "docsteach@nara.gov"
  },
  "publisher": {
    "@type": "Organization",
    "name": "National Archives and Records Administration",
    "url": "http://www.archives.gov",
    "email": "education@nara.gov"
  },
  "accessibilityFeature": "alternativeText",
  "accessibilityHazard": [
    "noFlashingHazzard",
    " noMotionSimulationHazzard",
    " noSoundHazzard"
  ],
  "learningRegistryEnvelope": {
    "digital_signature": {
      "key_location": ["http://goopen.sandbox.learningregistry.net/pubkey"],
    },
    "keys": [
      "EZPublish-1.5",
      "EZPublish"
    ],
    "TOS": {
      "submission_TOS": "http://www.learningregistry.org/tos"
    },
    "payload_placement": "json-ld embedded",
    "identity": {
      "submitter": "joe hobson <joe@navigationnorth.com>",
      "signer": "Alpha Node (Resource Data Signing Key) <administrator@learningregistry.org>",
      "submitter_type": "user"
    },
    "deleteVotes": [{
      "@type": "deleteVote",
      "name": "Learning Tapestry",
      "url": "http://www.learningtapestry.com",
      "email": "info@learningtapestry.com",
      "date": "2016-04-03",
      "reasons": ["resourceGone"]
    }],
    
  },
  "@context": [
    {
      "@vocab": "http://schema.org/",
      "url": {
        "@type": "@id"
      }
    },
    {
      "lrmi": "http://lrmi.net/the-specification#",
      "useRightsUrl": {
        "@id": "lrmi:useRightsUrl",
        "@type": "@id"
      }
    },
    {
      "learningregistry": "http://learningregistry.org/schemas/v2/envelope",
      "envelopeLR": {
        "@id": "learningregistry:learningRegistryEnvelope",
        "@type": "@id"
      }
    }
  ]
}