{
  "schema_version": "1",
  "negotiation_id": "neg-01HZX9Y7Y1M2N3B4V5C6X7Z8A9",
  "requester_did": "did:plc:rajexamplehome",
  "responder_did": "did:plc:transitoperatorhome",
  "status": "accepted",
  "requested": {
    "protocol_version": "1.0-draft",
    "profiles": ["home-node", "provider-dina"],
    "auth_method": "ed25519-http-v1",
    "message_family": "coordination.request",
    "request_mode": "inline_preferred",
    "response_envelope_version": "1",
    "required_operations": ["request_service", "deliver_failure"],
    "required_extensions": ["dina.provenance"],
    "optional_extensions": ["dina.trust"]
  },
  "selected": {
    "protocol_version": "1.0-draft",
    "profiles": ["provider-dina"],
    "auth_method": "ed25519-http-v1",
    "message_family": "coordination.request",
    "request_mode": "inline_preferred",
    "response_envelope_version": "1",
    "required_operations": ["request_service"],
    "required_extensions": ["dina.provenance"],
    "optional_extensions": ["dina.trust"]
  },
  "common_subset": {
    "protocol_version": "1.0-draft",
    "profiles": ["provider-dina"],
    "auth_method": "ed25519-http-v1",
    "message_family": "coordination.request",
    "request_mode": "inline_preferred",
    "response_envelope_version": "1",
    "required_operations": ["request_service"],
    "required_extensions": ["dina.provenance"]
  },
  "fallback": {
    "use_common_subset": true,
    "reason": "Responder does not support the optional dina.trust extension in this route."
  },
  "expires_at": "2026-04-05T09:30:00Z",
  "extensions": {
    "dina.example.session": {
      "correlation_hint": "bus-eta-42"
    }
  }
}