{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1833",
    "entityType": "User",
    "nonce": "0xa622addb60c60d500f5acb52289bfb7ea8c602dfbc23b4af3c4c5e6568af02ad",
    "signature": "0xb4655e9e7f7d9bbb556b15a6b7982d7b9c7d2fa4ce1bc08edb2a6b615dfa28b218c2c2bfad6f7211f1575c872def540e2de6986439f12373a92dc6b82c1dcd491c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}