{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x7f2998ac61d344ae8adb680e5d792fed23c92d765f11276a2db1b8a125d00812",
    "signature": "0xa1325e619502afe9e18c6ea1dca76be46a0010421bc1a42a332f1e574f04a1117b2f8f827bcda36f0c7b2573cbc7dae6f1b5948efeb66b635a6cc3ae9e0f9b201c",
    "signer": "0xC4e201BEaDD3933E76e562c99f9F367Ced3f68d7",
    "userId": "533673360"
  }
}