{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x1b497707bb538a2f4d7fe711375f59c1f02791d55f275fed782bb9b8a812d07c",
    "signature": "0xabe0fc5d64849c7a4a53454dcf7709514276589afb85f0262a747289714784eb2058af3bb810c3275883517a5f2c32ab97012f34d337c9cb4d22ad501d24866f1b",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}