{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "30334",
    "entityType": "User",
    "nonce": "0x6f16f45697c3fff7ba987904d46f2eeda7c9f100763cad9cd4920f54bd38e8bd",
    "signature": "0x33f2378f3209b2233782e3a79eb2737b5b73c906e7d505fbfc9ba3144d0deaab5a799f2d7c4e7a998aca1f5c1d43a638dc50d2cb8e67a32a3820c432e37172ab1c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}