{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x21c9ecac32453904dd7f739429df47117fcae025834f9d9b52169b960545aa17",
    "signature": "0x63249df57e6a60c08f72deb27d373962e89ab14a1d1411c90332a2f89f96348f210d6d135ebaa5d7eadd1b5e3e06f5ed86fe934bf922e00d21a185a790adaafa1b",
    "signer": "0x54bed9FCc45710BaB526AaA37Be6d7E22e31d2e8",
    "userId": "555228176"
  }
}