{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x7def774bc04d48c0857454ce7b2bcf0cda87138cd4fb0ebba95ac214b750ac93",
    "signature": "0x3214ad0effb96b1ba7ad9c3f67e3c3bd452ef58d496399e49d7f9e931928a5ed7a44b735b744eb5c82cec47cafcdb89a14b783deb6362a495e5e2b13c320ac8a1c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}