{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x501f00adb48413cec250df1ec6a9f3e4002d771cda096d2eea0aaf073d77d732",
    "signature": "0xd3cc4bbe9c61106236f2c0145dbf570b97cbfca8e526812280ad6f2081f17bee3c2f5ac35b25877372551f7d46b7f8a84ba0b95cfdcf62b8aef16757653125471c",
    "signer": "0xf4e39f23021D832A7D8e37A3e280Bb0E5bC75bFC",
    "userId": "406892069"
  }
}