{
  "kind": "payload_envelope",
  "expect": "valid",
  "description": "receipt_only placement: client wants observation but no in-band delivery",
  "data": {
    "schema_version": "lifeloop.v0.2",
    "payload_id": "pay-recv-1",
    "client_id": "ccd",
    "payload_kind": "audit_record",
    "format": "client-defined",
    "content_encoding": "utf8",
    "body": "receipt-only audit",
    "byte_size": 18,
    "acceptable_placements": [
      { "placement": "receipt_only", "requirement": "required" }
    ]
  }
}
