{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "584186978",
    "entityType": "User",
    "nonce": "0xd539b8e62036dd2e43d90cb6765da090ac472fca907fa314a8fad958f6dce124",
    "signature": "0x1b83472dfbc6d3ca0d6c339a5ae64e7fbe096fd94f8f4133394b42d1d8bab3c550ed3568fc60d2e0c13073e41f14f4fa92e5ab771ced5e68ce6559531f42c7ae1b",
    "signer": "0x812890A6DBee34A114713AB8a5D839CDB1c20363",
    "userId": "354441"
  }
}