{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "456716469",
    "entityType": "User",
    "nonce": "0xd81fb99cb62f311e18badc147f2150d7f227c277cd7b7b0860f2799b3d950736",
    "signature": "0xcd3ea8940787764b8365192fdc7858434203ab5485204ece4e6ae6cbca19ba536e6b361f1798a5fea372bbd97bdd2768c9a2a0f661f5446a0ac7f1f61b5102aa1c",
    "signer": "0x9FF2A7F5Fab732dA57359bb3eD63a95511bD1329",
    "userId": "67863854"
  }
}