{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "845727327",
    "entityType": "User",
    "nonce": "0x0931a5c69c6b004464a045b847a8bce80e0d7a3d77c91ac928024569f94cf117",
    "signature": "0x62e38907f0c39954e05dbb7ab11ee88ffda41bcf777f9ecf41837f7016b0c6e6336cc250d7742e808a34a7a8beee27ad50b1942d1f8e634ea5999cb27caec5791b",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}