{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54545",
    "entityType": "User",
    "nonce": "0xce411bfb0136269b68bc6a2c1aa2c40ff4bd8fbff771b0e5bf221a45b4689e41",
    "signature": "0xd1e5840af90f9319944ea69db30c9f2a046639ab3d6125eb03e110631910b84f51af40e45ab2c1813b8aa56b7c183c1e9b9d7fb55cd409939c7aeb494c652b1c1c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}