{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50053",
    "entityType": "User",
    "nonce": "0x4eb485ecf92ad509cdaa247e81f4f238600da616c23d58c895d6bfe378875ac4",
    "signature": "0x5213a11be772e81b682fb9bd33088ad94f1a083a3591dac93189749f58c318a344163c3dd21a02ee7a9e8c55ab77ebc7845a5c5dbc86a88b046abd84cb15c8cd1b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}