{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "728570067",
    "entityType": "User",
    "nonce": "0x4c55b20691f9d35b090149cda8ceb1de55a9f7117c84e998638b2d95c54f09ec",
    "signature": "0x95a8460e2357afd961eafb5efb15c2577c6c8c1b3818fcef0960c418264feb4e541cbbf5839c68ffb8716eac030e3ced73140c2426815620bedcc1edd69b058a1c",
    "signer": "0x31d8287F4A5705D078E4d3f85F3c5cfe5cA8E18D",
    "userId": "100638"
  }
}