{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0x62b0fc31ee3fc3ed9d4707ab7250dd77820ef1b5151a60b35ee88132e3adb5c8",
    "signature": "0xf24d26370fce9ed9f8da6bdfe9a50893e76b88809cc409c04971955e621b4ab2544cd5d123f3d7eb74b7e04640682bd13a90e80b362b19c059e59ea09cc188ac1c",
    "signer": "0x5FCc1F0438515241FDb18a12701ab1d5374C0892",
    "userId": "472377942"
  }
}