{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "668973619",
    "entityType": "User",
    "nonce": "0x4865db589641a19eab3a06ec4e8a17e42a32304be9febf714012ada3951ecdc2",
    "signature": "0x1b493b509149b3067dafbe543b042daa50175a5f6acd25a9fcdf4b0f28f3a88305f8904473ca1e432f72333e78bb9b52ec1693b5caba91499fe8254df9e125d91c",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}