{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "333763354",
    "entityType": "User",
    "nonce": "0x3d9e005631dd621607bcdce425c7c5ee738a55e0b405a900c2024891f5e0a065",
    "signature": "0x35c4ddecf0af649b5fe76ef28768cf1c11abee67c41416ed3e20d50451f16369686644017f6de413bcc8358911553fecb5020104096b40458968f88e2465688a1c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}