{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "456716469",
    "entityType": "User",
    "nonce": "0xbacf0ac4dfe7e6eafa097b00e56db2cd4bbd2cf7734e310ba9b6c5df11d1b54c",
    "signature": "0x9751b62dfad2a6f0c406d1b7cee9f1218ccf171edaa73e9a29f3bc3cba9f227758df17fb194d0aab7abed0efc915c8b4793928f3f2a5ab088e7e353ef2660c3b1c",
    "signer": "0x0D600BCb2801b314014bB4C7Ef793adD38E375C8",
    "userId": "916206761"
  }
}