{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6b51cb4bdbea0c3f5b5f53112e25bdb2b840f2b8315e909d026fc6bf9bc70202",
    "signature": "0x013bb53b12f2cfe383a674cba30b34be773aeb55bdeba224a97cfb790fc9962e725b0fdc3d6391753fed3a44e7146266dcd707e2663f5d5727e03c46e6102a7f1c",
    "signer": "0x178947C45799B8c451Db3666784EFe2F127c86Ea",
    "userId": "447712901"
  }
}