{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "325624",
    "entityType": "User",
    "nonce": "0x9842a8a5a5a2f3f1292bfa68dbc2c198bea7346d4bfac41424df9895b600de12",
    "signature": "0x773b80db41e6056f7e9d90c8a67520b1421e4e97fd917277d46b6a661c77d08820b6adb64caaa9e2ee40b53e824cf474bb2049fb120cc3614e0e2a8ca15e6e741c",
    "signer": "0x8b77d47DA28d313A2824468913d2f44F9a5B7b75",
    "userId": "808833626"
  }
}