{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3449",
    "entityType": "User",
    "nonce": "0x19a22f93e2d1d88648dd0ac7109a4475cb9f98261a8c1c0b32245e380bc5e630",
    "signature": "0x88a573bd913e9023274acf9f037e80efffdad3f3c121f6bbcbf4846e150e21e8107ed9f5c950ccf825556c654d86c32fe8a61adf14f930dcd783b7d0599186a91b",
    "signer": "0x227c6D4cdFc19155a5212Bc082E6079835436E1e",
    "userId": "94961"
  }
}