{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x20624ecc80d7e56c18380b3f6e25ffcf1fe61b3111f64a97fc61c7af3296dbed",
    "signature": "0x39da9f3cbf9312517cb6ad692c461b29b6208e9b17e22ed881ce65c6a008145709e1d16ff3b2272b00e1d4bd00e2c80be0b87c466de5639defd3a6b3460ddaa31b",
    "signer": "0x6f14c0B3a4c40A95BF7421F00865288cBe502808",
    "userId": "343198928"
  }
}