{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "398",
    "entityType": "User",
    "nonce": "0x9bec0bca2a80cd7de74670700033f641341d17ae0ccda0a4fc9b02fa6b3aa399",
    "signature": "0x9962ff3f24261b5acdc32a6196d2f2f57adc370c1df013356f08c5fe74bc48452ed434734ab5e1c04b5b84f787afbe665bb2f3792ad5b0b6020a82931223b3841c",
    "signer": "0x52F331C086a11941E738a6C86d9F127E934dDEB1",
    "userId": "281470566"
  }
}