{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "44142994",
    "entityType": "User",
    "nonce": "0x8b24b6274ab18475d988943160a101e503207073425a252d45419a6a226ae7c8",
    "signature": "0x9fcfc58c3b24adb22bbe9ba83a9c1e39c00775ed00ed3417561f695cf28dc47a4e41a79415d223a32378a33b040897e5b6bfcbe7f3c54f727a7a7bf5c1d7ad621c",
    "signer": "0x441F39B467Eb5d276bD5413c62C6f97231CAFDC8",
    "userId": "345792093"
  }
}