{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x220dceffa9055361654e41707d398a476227e55cc21003b409fdc484966fe792",
    "signature": "0xe8542e2120f9cf3484bd51c6eda2041c817493fd85d32b017d9cae778625b1f7029ef12afea4df26df55a875544f6bd1da4fe8121d588e9ba48b8a39af4aa8d31b",
    "signer": "0x14FF2Ce3bf23AEeC9C140996251F6f85D8e99431",
    "userId": "53273933"
  }
}