{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "988703629",
    "entityType": "User",
    "nonce": "0xf74edcd0455eead10c66327f8f22ae32e5a2f52f76559ca6aceaf6bc048e01ac",
    "signature": "0x143c441e9d8808deddc7842c86c62a4e5353aefff687fbab6622f669627b94420317928c2848039f86e33a57b9db80cf6db2a959f12d467b98573a57befe74651c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}