{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "343301",
    "entityType": "User",
    "nonce": "0x77be3a2f549b7b6ef2e87afe97079ce342849d2482bfeedeb88a25183f0ff331",
    "signature": "0xe73515389e8b7e8505e6fee949ff4e0cdb9af6c08aad9ccd55add298e33375d410eedc04171db5465649fe75f8cf201953f6ef512c4419b258a4c1fe6f2db3b61b",
    "signer": "0x5bc0009c945577B994122eEEdD891ADE9f7e2DB2",
    "userId": "77605"
  }
}