{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xea60509f505c97144fc73ad36f508472dc0302cfd2ff768d6202ca6cde57aaa1",
    "signature": "0xc8f276391089317c76b5247ecc902fa97ef060355fac029253c6ca045099feb043f6f0c64a810231dad8dbc159078cc16207b7602082f91ecef6373cc10899fd1b",
    "signer": "0x42cf263ecd96368a79BDA3Ebc5Ae5268842619D6",
    "userId": "124078871"
  }
}