{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "329599",
    "entityType": "User",
    "nonce": "0x374ecfc14e10e9aca84cbd02ed93ffcf89475e682f01520bf43f474ea0b53923",
    "signature": "0x738e01852a14aab704737de5354f3d95e86c2a3746a7dc8253ad2b46249fe45717aaf1bcb1937402e2294d4e62f3529c1d76531289a209472a55a198bdac4afa1c",
    "signer": "0xe28A05dF906d6A86C4Dd804b23747E87A9a10BA3",
    "userId": "403179"
  }
}