{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "138100",
    "entityType": "User",
    "nonce": "0x396aa12bcf2d514540f84b9b88f7df2d4e49849dfaafb42cfa549707a4cb69de",
    "signature": "0x194ed32e3e48089831cab178214b43dd45afe414802b82bbac438f1368fc015921e9cf3f8378c67a648e81e0268b21ab45b9b77cbb2e3077619d6455102443a41c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}