{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "404",
    "entityType": "User",
    "nonce": "0x5b0103416b48698d97ce3890f897e5de368ebaad1764e83b81bca7814c50fa70",
    "signature": "0xadfcb4540d04d9c3124599cd63ff9adea6cdb841700af966caddae560291647447cd743bdb994494511257130f3f8994479aaa5a7d85438f8b0df15138e6c5181c",
    "signer": "0x9f5896C078219d89B9A5D8B9C381b7be8BEf4CFA",
    "userId": "56704236"
  }
}