{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1698340",
    "entityType": "User",
    "nonce": "0x57fdec7450dd0e34bb7e7e74942cc134464c18fe11314c3b1cc66202ce0d2fc6",
    "signature": "0x6302941de42ed7e3a3db11adef06776184086acc4d12d868516004698951b0ef710ab805763ba4d90744b013f952ff512a9ad30b218872f998ffbf3d1fddb9981c",
    "signer": "0x3256Bd2D0B1984E7df4FA525017aD9bA48470760",
    "userId": "51"
  }
}