{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "196732",
    "entityType": "User",
    "nonce": "0xf3af85f5e2bba48bb93304e1643f12ab164dfc83ac3a0980287bf16466a317f6",
    "signature": "0x7133f81423af24edc23c3e8f12fed80363bf6c4a7d78382620b2d52e18a5317245d1e6d0eeaf7f9885c6efb2e2f7f44e4d9d78ac4d5fb4de404e7a73a9d56ca31b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}