{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa9cc96190bd1964d2da4233d5c784a9031298fd73072f5ceb8bb40aaf5932d56",
    "signature": "0x7514dda2289cbbdd5bf3f3e0fd76ced8e6e6b958157aa2f383ee866178673cc21e8404cdc0e240b59dd536b990fb5083f03e53b5e1c98a65a4e8b88cd9f3cb8b1c",
    "signer": "0x07e5753264E3b7F0c0ba1452D6a786dbd1Ea9FCD",
    "userId": "239876585"
  }
}