{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1477402",
    "entityType": "User",
    "nonce": "0x809f9d9e5f08074670d64a5092e9af6699578b4a536f925ddd2403955bbe369d",
    "signature": "0xf868809fbb1fab92310bd2fad72815f1345b8fa3629fe2b033ea02d23c48db4a06daf2228b8cfeea9d990c01ba1d73f1b6a8b6e382b95fcea5c53b3fc79b38a51c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}