{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "721016",
    "entityType": "User",
    "nonce": "0x23374fd1ffd83053bc59ed6986358f106011fbfca5a3ffbb46cb8a2bcbb94a38",
    "signature": "0x3fac7002be8705328503823b8112c61ca8621e72dac8ed3848d8c06dea1865a8560da53d71426f7c1f942bb8667f8c62e5da959a622f27a949c54ea622d9a7201c",
    "signer": "0xE795526f098824a87a94C79d58a4299b51b20a3c",
    "userId": "837713671"
  }
}