{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe7ce41ad30f00e23ce0a1085068d9768235c4fed370c0fc00a151df74344d3cd",
    "signature": "0x80cdbc750cfef03273ff9dcc85633dc689e67759f0331083023377271c79b5aa0494b24bd486a26793c41ddc53a6aa34be599e30a8c8ebed1f271b3052da54991c",
    "signer": "0xDa820cEfD0a816B95Cb6506bd2c0bb554f3b30c7",
    "userId": "845618918"
  }
}