{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "404",
    "entityType": "User",
    "nonce": "0xea3c5ca7869b7b6d9a404ca74146a0fc42c508dbdb046b71eda2c98a027f2269",
    "signature": "0x2a387161808e68de15ac96f23ca1f88e23879c091d616ea8db33b5a9bf827efc2c2be5b12e8a4e1992963b207789858052938ec9f1afe43124d1712c2cb928e81b",
    "signer": "0xc97A6025Ad8c7Ba1a35Ef7E3A3b88ABc8b2013BF",
    "userId": "666092734"
  }
}