{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "647391197",
    "entityType": "User",
    "nonce": "0x7daf4df859be983cf0cfd273b88fb4aff37edd57f2ccb7a7c216280474d09c11",
    "signature": "0x01bef0488ed08e19c8765433f30aec39c7464a855f0100aa6185547ec793ced12a7096dc87725d709a9cd76782a2da744c6cd616ee6ebb655cf128eb8b6618251b",
    "signer": "0x9c1a2996a6DCe12e947BD7C8A755b6150A3eD5f4",
    "userId": "474113241"
  }
}