{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "520317695",
    "entityType": "User",
    "nonce": "0x0f2138529658542793a71b914995034cab926d11b665fdee4943a53403424b86",
    "signature": "0x8fb6e0104fd7ef4352f5ddb78a74ceb4a70e7d85b36bd699fbf74fa36ba99a544dc65b0c1125c65540820ce158cf029c8c6a365c81d824a9dda67ecfc5d1340f1c",
    "signer": "0x1ABf6DD41fe1E6b1C2d3A69859a25C92caa31b32",
    "userId": "17689"
  }
}