{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1831424",
    "entityType": "User",
    "nonce": "0xd8a9875a3f813b4fc855335d217558a5aaf0b97875d162bb18a8778b33533836",
    "signature": "0xac09adea509108c8c7b7fc92a6314fbc38c379400e5cb87ad49c1e378b6e170263565902c38c59d4f0eeefb8fa219ba64792621f083baa4baecbe97a06000e351c",
    "signer": "0x40E8E224E8F8a9f835e4dc8851Da72DCEd75986F",
    "userId": "504092010"
  }
}