{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1481230",
    "entityType": "User",
    "nonce": "0x2a3762a023091621e83c2b3c5fb6ff46fc31b11bc295bd06b43b9b8f7ac31e42",
    "signature": "0x610b979ed99820244c0ce55beb6bc84c0dedaca21bce0d08f4da6c72f1e9ef427e38ed1c40e7ba807d8a987e74ede2a2fe40ca439ac5cdf41fff1c55410879161c",
    "signer": "0x52F331C086a11941E738a6C86d9F127E934dDEB1",
    "userId": "281470566"
  }
}