{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x65525a5c9e7e149fdf36a296229da422f8560fe52e06cb49a314bdcd99edb4a6",
    "signature": "0xcb2903c2c1a60c94d51796fb298239a85e4198950334f2fc96a348f3001d9803705783bab9401efdf1ce3b77c6c83e6abb2414e1bc2a65203d49ab35270d88801c",
    "signer": "0x51E10cE3d87db36A14c371eFb70ce59b8104ed6B",
    "userId": "779957492"
  }
}