{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "499031899",
    "entityType": "User",
    "nonce": "0x45fba2c686c74b8d9347c23714d9f6ed5392b95a3658e89bce83150d6c93c024",
    "signature": "0xdcaaeab2663bf907baec55900deaad87d30e97a973b66e167e6989c8604c6e5068d11625b4c3294edf623b255c0a267c7cf7a4adbb1608f80e62ba28bf9564b51b",
    "signer": "0xd9Fa1ac44597D750006BCEd68B36a63Afa62AEfC",
    "userId": "221168944"
  }
}