{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x76d164035f976605a7b7dbd8c482799f82280a69bbe24b1a1bdc0063b6c69e5e",
    "signature": "0x9e24c457899790a6d2482886f2da72629b78016aaf9415f6366c903fc67625f91f1ed2830a49322a7c62bd6b2b2fc48a55e35cec1564827e970c378269f595f31b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}