{
  "alg": "Ed25519",
  "spki": "MCowBQYDK2VwAyEAZnQYJj5LAkKqEvWHtginwmaFOeU6ShQFRR4/CIwWCOU=",
  "id": "6967c16b56f94b95",
  "room": "r-6967",
  "note": "Public key of the operator-run room that signed these receipts. Pin it; the private key never leaves the room."
}