{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4455",
    "entityType": "User",
    "nonce": "0x52bb8d4013ebbaf91ac084fecd2a423a8bfa4be1cd8bfb42db73e36a93421227",
    "signature": "0x60d70fecdfdc50b599fcef365665dba8672a0824fd96e0adca21598a010f30826b106081fd6944f459c9f445a05e3e6ba1f8f3c948d5d1096d2e16893ab9a50d1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}