{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x448007fb5f9f8b01b12bf612c7c0e1f626a32af4d8a76c39fa88ed92e84b5d2e",
    "signature": "0xe828debb18739be2bb3dfdff92e9a318993c9b01d1fcaeba138915cc1ec7afeb6d5b6fcb151bb63c3124af9274a5de41d49eed1f69ecc5b7010c21ba8e1d56d01c",
    "signer": "0xdA4a90FB60d0D99ED3Eaeb8b2c26bBC1F5A3b981",
    "userId": "481107997"
  }
}