{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "155973826",
    "entityType": "User",
    "nonce": "0x963e7a86fa13b6ba4a52859dfa3666dbacebb74bb8333b814747eb060756c5b5",
    "signature": "0x63a1e9ea0c5c5dbebec87b5fa2323dca20debb076623c70f0ee554d0478018071b0c9bc23f408b78af5b52cc0534acc80272066042d7bebda65f254e95fbdb651b",
    "signer": "0xf15FD63403ea1176eaa213fd9354417c325a643b",
    "userId": "813142179"
  }
}