{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xaf47787d1022ee23ebec859adfa949c5e6b2777a44a9426d1f06025a5b215a07",
    "signature": "0x020453b54306a11c217d502ca78fb6516e4e98243cd59c485aa4fc36b4fb5b006665743639e58ec63b0010f3fa51661cfdb7223e38d8800d16cac30babb07a2f1b",
    "signer": "0x7F8840d8F919Bce67704c980a3D1c5eCF81ffcB5",
    "userId": "923647058"
  }
}