{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc6a3b6eff248828a69b756a1314339c0a8f56319a15b772aed3a4d5831c6d40d",
    "signature": "0x4cefdc61409681264761883f4a607842291068155e4b69de14bba31475773d3115c288a92b925a23e934f7710e094674e92c78e6a612dbd72ad990d4954b8e251c",
    "signer": "0xd6d40d6b3894a585d401FBA9cF508E31121E191B",
    "userId": "149981829"
  }
}