{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "566435355",
    "entityType": "User",
    "nonce": "0x064c168c9af3377278242b39843197f77eb7465ebcf2bcaea6abb8c0eb3ede9c",
    "signature": "0xfc4a8152ede29d48f757ba4f6f160006ff70d2fbc49960bb47c5f1cc639f73d07db93f223c198e368e980953cb5a668858f439b8adab65e4e06c0d90f3e4a2221b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}