{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "903958768",
    "entityType": "User",
    "nonce": "0x1447a5321b8b99edd043c3f2bfac4c35a45c1c50ecc70ffb8073a601c733991f",
    "signature": "0xbefd996e5300fa9b4f21ef61eb443627e8d9ac6c2eedf9d6a7885c99ec060c551e19916f79ef2e2a9cf2a25f48172cc288d90480a1e91874047a8d38559bf1ce1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}