{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "111540320",
    "entityType": "User",
    "nonce": "0xdff8b51ec9fb3ba6d412c56cd10d8366a406e4909e58108832132d1302520ecd",
    "signature": "0xbd6913a9576d23683b818244cc8ac3666e7ebdce7ed79c9c3ae07cb1dfd35a632d912e613e7feb91fd22cd2715b041ad6ebbe2e9142b7bbca20b194762af24bc1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}