{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "645720561",
    "entityType": "User",
    "nonce": "0xce7c07d67f0997945628264ce5e1d9d17b45a9c62ab6f4059af7466baea752ec",
    "signature": "0x9d6627bac72f67296508b68ca6ebe03d6c6d832215d688d12d79654167bdd8a009293b8005fe6e6ebfe2eeb38be5a28a9eeb9aa7e16e4fc892b5720a8df80fb01b",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}