{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "581397101",
    "entityType": "User",
    "nonce": "0x0bf55d0acccba58f1679a9b8faf059955748799d3743e3c52dd080052f8d3682",
    "signature": "0x2dc0bd2cbfdffd5c4926b4b504945a949d15daf7647b9a06af0277e31ce468096c7073b5cf5de47e835c8cd2f69f45986f958881c0d9db2a2ad878c76743a9dc1c",
    "signer": "0xA2431a8293fD33C6289244D08A91489fF2C9f18A",
    "userId": "325308787"
  }
}