{
  "type": "about",
  "about": "%4jh6D1k2cB+0+a8ZJUSLsZN2e/T32P+1pRSSl1CxHHA=.sha256",
  "attendee": {
    "link": "@Bp5Z5TQKv6E/Y+QZn/3LiDWMPi63EP8MHsXZ4tiIb2w=.ed25519"
  }
}