{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "166773",
    "entityType": "User",
    "nonce": "0x19f0b7f2085b9f538f51937dc8111c487d88e9ff30e4be735be69de3e61cc391",
    "signature": "0xad2f2bcdc4c8a9cd87239878469a9672717da133523cb5fff0f6b546db7bae364e11aa98f02759cbfb3c605ee6c6f952ec8ea6ce82ccd5b81bb336edcabb1ed61c",
    "signer": "0x9db84b5af18534d8Ee180c90E1377f813B5Ec313",
    "userId": "741417198"
  }
}