Provenance of a signature activity against a DiagnosticReport using an electronic signature (no evidence of signature, neither image or digital-signature)

{
  "resourceType" : "Provenance",
  "id" : "example-diagnosticreport-sig",
  "text" : {
    "status" : "generated",
    "div" : "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p><b>Generated Narrative: Provenance</b><a name=\"example-diagnosticreport-sig\"> </a><a name=\"hcexample-diagnosticreport-sig\"> </a></p><div style=\"display: inline-block; background-color: #d9e0e7; padding: 6px; margin: 4px; border: 1px solid #8da1b4; border-radius: 5px; line-height: 60%\"><p style=\"margin-bottom: 0px\">Resource Provenance &quot;example-diagnosticreport-sig&quot; </p></div><p><b>target</b>: <span title=\"  \n    an example Provenance of a verification without changing the content, electronic signature\n   \"><a href=\"diagnosticreport-example.html\">DiagnosticReport/101</a></span></p><p><b>recorded</b>: Mar 3, 2011, 9:30:00 PM</p><p><b>policy</b>: <a href=\"http://example.org/policy/Reviewed\">http://example.org/policy/Reviewed</a></p><p><b>activity</b>: Verify Record Lifecycle Event <span style=\"background: LightGoldenRodYellow; margin: 4px; border: 1px solid khaki\"> (<a href=\"http://terminology.hl7.org/5.5.0/CodeSystem-iso-21089-lifecycle.html\">ISO 21089 2017 Health Record Lifecycle Events</a>#verify)</span></p><p><b>patient</b>: <a href=\"patient-example-b.html\">Patient/pat2</a> &quot;Duck DONALD&quot;</p><h3>Agents</h3><table class=\"grid\"><tr><td style=\"display: none\">-</td><td><b>Type</b></td><td><b>Who</b></td></tr><tr><td style=\"display: none\">*</td><td>Verifier <span style=\"background: LightGoldenRodYellow; margin: 4px; border: 1px solid khaki\"> (<a href=\"http://terminology.hl7.org/5.5.0/CodeSystem-provenance-participant-type.html\">Provenance participant type</a>#verifier)</span></td><td><a href=\"organization-example-lab.html\">Organization/1832473e-2fe0-452d-abe9-3cdb9879522f</a> &quot;Clinical Lab&quot;</td></tr></table><h3>Signatures</h3><table class=\"grid\"><tr><td style=\"display: none\">-</td><td><b>Type</b></td><td><b>When</b></td><td><b>Who</b></td></tr><tr><td style=\"display: none\">*</td><td><span title=\"  verification signature  \">Proof of approval (Details: http://uri.etsi.org/01903/v1.2.2 code ProofOfapproval = 'Proof of approval', stated as 'Proof of approval')</span></td><td>Mar 3, 2011, 9:30:00 PM</td><td><a href=\"organization-example-lab.html\">Organization/1832473e-2fe0-452d-abe9-3cdb9879522f</a> &quot;Clinical Lab&quot;</td></tr></table></div>"
  },
  "target" : [{
    "reference" : "DiagnosticReport/101"
  }],
  "recorded" : "2011-03-04T08:30:00+11:00",
  "policy" : ["http://example.org/policy/Reviewed"],
  "activity" : {
    "coding" : [{
      "system" : "http://terminology.hl7.org/CodeSystem/iso-21089-lifecycle",
      "code" : "verify"
    }]
  },
  "patient" : {
    "reference" : "Patient/pat2"
  },
  "agent" : [{
    "type" : {
      "coding" : [{
        "system" : "http://terminology.hl7.org/CodeSystem/provenance-participant-type",
        "code" : "verifier",
        "display" : "Verifier"
      }]
    },
    "who" : {
      "reference" : "Organization/1832473e-2fe0-452d-abe9-3cdb9879522f"
    }
  }],
  "signature" : [{
    "type" : [{
      "system" : "http://uri.etsi.org/01903/v1.2.2",
      "code" : "ProofOfapproval",
      "display" : "Proof of approval"
    }],
    "when" : "2011-03-04T08:30:00+11:00",
    "who" : {
      "reference" : "Organization/1832473e-2fe0-452d-abe9-3cdb9879522f"
    }
  }]
}