{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x51c80d6a8efe21e72629e95fd89a1575ccd8f928a85cf45cef97dfaf796c59c6",
    "signature": "0x06d3f4c3a14aaf93492d5183ec062bc1bc1d2c217b713648484f2ea11b03c43078aa5bffad6c7f8b41041a24eecc4066ba49c5b69495ce9c9ff42a2ca02484281c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}