{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xb666f87573633ea8870369f309309fba6dc95287603888be92b20eb2e8d87ec0",
    "signature": "0x1af0ced523fe62f085393a03a8777f70eb788a187cc9d888081b5f5b6f060e200053594c6a0b1e64dd0ac60ed553ee0e216b9248eb76c89fd8cb764a221a522e1b",
    "signer": "0x5D4848bCf5c4abA1a0Fdf2B61408c9e4288aDb0E",
    "userId": "305415280"
  }
}