{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "311859068",
    "entityType": "User",
    "nonce": "0x0290d96511ed5d000ed27502ae3ede3705f9cf5a955314d42382745c272cfeeb",
    "signature": "0xfb624da1ab5ed71e1243aa4ecdff14104b41d78d1fac0a47d144d2c9104fb77144c0a293aa47b84e4e4bd51bd66668cd0dc34a6539a23683e1e8589aa1dc943e1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}