{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "301637",
    "entityType": "User",
    "nonce": "0x5a8a897047501db67e6ad430aef77510a09521d2229ea725d55a9f1c316df367",
    "signature": "0x6d27e41d97e5a7becd0c41134320d20d530761f0082044c1697c2de3cbafd0f330717a6da9887b3201fd505f88544a92651e1a37eb7580efc97c7c709fd31e8d1b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}