{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16477",
    "entityType": "User",
    "nonce": "0xb9213a5020b4de8eb8314bd22bad01a3ea75357381468db596fed693a38afd79",
    "signature": "0x35353fab8d6b1bd5385c1b403ae4a67016a16deaa756757ff0a2085372db61e21776900299060bd642708206309a67564a20bec38c81c74f43f7be692144357a1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}