{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xefb61fc564bf8ca72426053a0cb5318558555942776d1234b2bf8fc9ba094a45",
    "signature": "0xc57a6784a55c4cf46b67f39ba5a65b94fcba1c144a4b84aceef1ce5bb1bb9761730cb95ecfc288695f9425638cb1e63c4e4d429d8c33d58898b00a172d8cf9371b",
    "signer": "0x4fdc03E53311BF6b1B8728dd0Ae0630bF74176f1",
    "userId": "162770660"
  }
}