{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd45962983d5d135b11bfc475dcf3c97dbf5d86333458e484325fc8296f8e1e49",
    "signature": "0xb050a3f21938e5507e48aca94c1e192b8c4974efc7933f58781711a38a4a426d5113275e688f072c80782fd862250354f5f6645aefc77f4479e9e8f8357898ae1c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}