{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "456716469",
    "entityType": "User",
    "nonce": "0x16e2624df6c0e43bcaefae230908531de008641c0ed0106d639ff29fe790256f",
    "signature": "0x7b9311a717ba7e8f51652494570aa3218674ec76c83938d0e1e0726c4d5e99874679171da69ef7e34b68750883c2f042909016720bf0c94378c916377daef18d1b",
    "signer": "0xE7a9E33DeC9Adf8605A88750C979e41f6fdAba53",
    "userId": "722055746"
  }
}