Update Specimen with identifier {identifier}

{
  "resourceType": "Specimen",
  "id": "pooled-serum",
  "text": {
    "status": "generated",
    "div": "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p><b>Generated Narrative with Details</b></p><p><b>id</b>: pooled-serum</p><p><b>accessionIdentifier</b>: 20171120-1234</p><p><b>type</b>: Pooled serum sample <span>(Details : {https://vetmed.iastate.edu/vdl code 'Serum sample, pooled' = 'Serum sample, pooled', given as 'Serum sample, pooled'})</span></p><p><b>subject</b>: <a>Group/herd1</a></p><h3>Collections</h3><table><tr><td>-</td><td><b>Collector</b></td><td><b>Collected[x]</b></td></tr><tr><td>*</td><td>James Herriot, FRCVS</td><td>14/11/2017</td></tr></table><h3>Containers</h3><table><tr><td>-</td><td><b>Type</b></td></tr><tr><td>*</td><td>Red Top Blood Collection Tube <span>(Details : {https://vetmed.iastate.edu/vdl code 'RTT' = 'RTT', given as 'Red Top Tube'})</span></td></tr></table><p><b>note</b>: Pooled serum sample from 30 individuals</p></div>"
  },
  "accessionIdentifier": {
    "system": "https://vetmed.iastate.edu/vdl",
    "value": "20171120-1234"
  },
  "type": {
    "coding": [
      {
        "system": "https://vetmed.iastate.edu/vdl",
        "code": "Serum sample, pooled",
        "display": "Serum sample, pooled"
      }
    ],
    "text": "Pooled serum sample"
  },
  "subject": {
    "reference": "Group/herd1"
  },
  "collection": {
    "collector": {
      "display": "James Herriot, FRCVS"
    },
    "collectedDateTime": "2017-11-14"
  },
  "container": [
    {
      "type": {
        "coding": [
          {
            "system": "https://vetmed.iastate.edu/vdl",
            "code": "RTT",
            "display": "Red Top Tube"
          }
        ],
        "text": "Red Top Blood Collection Tube"
      }
    }
  ],
  "note": [
    {
      "text": "Pooled serum sample from 30 individuals"
    }
  ]
}