{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "670307808",
    "entityType": "User",
    "nonce": "0xb57599ec991f4c291314393752243c88b18098461e18afa785c4458ed5e186f7",
    "signature": "0x1b14577b844b4571af7e9be59e0a2ac3acf18dbdffd111c1b08f11746027f1a6209cffc9a6dd364b363d145336c711e4a754ca9d56ef0719ab02065f942d2e341c",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}