{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "595543989",
    "entityType": "User",
    "nonce": "0x6e90ff61d886bbd5bb87368a9c9b176aac54162dcc2b56d59758573cc9087052",
    "signature": "0x17630fd2bc431cdf73f74c0404b6cb1a75f2e4da7037e4aab88daf833e3282015d63986c3a217152b9310a5eec88fc845606ffb43065936b8dc3126e2f00fd3f1c",
    "signer": "0xCe28dce78A73b5c96c01000780576613c0b7Cd47",
    "userId": "300284320"
  }
}