{
  "@context": {"@vocab": "http://example.org/"},
  "id": "person1",
  "type": "IdentityProfile",
  "credential": [{
    "@graph": {
      "id": "cred1",
      "claim": {
        "id": "person1",
        "ageOver": 21
      },
      "signature": { ... }
    }, {
    "@graph": {    
      "id": "cred2",
      "claim": {
        "id": "person1",
        "passport": { ... },
      },
      "signature": { ... }
    }
  }]
}
