{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe60960e6a4f8fe29d93e58c3e0fd941fe1fa62ff6e3df87ab3af892bbc5d62c6",
    "signature": "0x743017b0aa78ec1b33faeb617ffc0a5e65b17957f9b8ee6e30abe1f23369190e4ff3291a9f959e3e0a44e01481d9961e628de399b634dd34cd20a2147de58d171b",
    "signer": "0xA2A9b6108baC0C9A23bD21da86Bd3234f5554C88",
    "userId": "133112025"
  }
}