{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "390699",
    "entityType": "User",
    "nonce": "0x908b58c87301cebd81d8a9e9be7a1179cb023044d4463c5205305b3751406449",
    "signature": "0x1b7f3dbfe75fd914708948712410b9a2cc57d39e7b63e12235bdc1250a0750d13ead4aaf7a07f7d519aa9c1dc702b57e16a011a992b30d024e753a092a8e97201b",
    "signer": "0x0168976438910D2f5330323a0d0141Fb4Af95032",
    "userId": "317847"
  }
}