{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3b07008b5c48b23b538f3feb0b61609a37ec5e3542e8891c6452facb7fbe7d2e",
    "signature": "0xfcd9e0ee2920817925224dac7f7265b6a23cffa4a9dbcb433a7bf5ec0a422ba9765a0858d061c7a4c785b97523f97139738a82d7c65bafa4dcfd297223330f0d1c",
    "signer": "0x2230770EC85946F97685aDECD4b734f51662F050",
    "userId": "887741865"
  }
}