{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x25040141453cddfd6b93e2c3ea762bc3af419b4bce73693cfca64e1656ae2079",
    "signature": "0x32190ad0f7d2ef3301962cca28542cec74ad4cabef2154679bb9d85a3ac6331b42abfd75382d0c16ab25762ed06c9393db9add99e6966ad7a6f79dd0bf499e5e1c",
    "signer": "0xA84D5010353EF6fE613cbE7b8ED85880A962cA97",
    "userId": "602512437"
  }
}