{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xffdd2f504e33b017fa8dae82d98779f21c23b9382d214562f744af5e4db980c3",
    "signature": "0xffd08f114df6a31a2f7841508766125c292d787a52252dd9651a38000e12513d764ce02bb140f5b4c07157cb56b53ab1a3a76a26d79e6dcf3825162ca18b95af1c",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}