{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "831760216",
    "entityType": "User",
    "nonce": "0xf90f49aa2c0305b6aab0ebcceae95629d694c41485ce88b1eb7d9323b7f884eb",
    "signature": "0x1745c59e4ba5810a99359ea696e06cf17370376e5e83ddbf804c48f9a1a521541b402962fc61e9343ce1572b8b59bd60a5ea681336de1c9192a79f56694c338e1c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}