{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x4cbbe22a9dbb4f2dd989d596559d0d227a92a65fe665b745afdb222a2d95d519",
    "signature": "0x2cd59c991172b64add20d5d8fadeca9a644f1a94d59c596209eddbf92378eae46cb42beae160f7becb841120428c31752940c95ffc45aaae3746a3af72ed0aa91c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}