{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "212145512",
    "entityType": "User",
    "nonce": "0xda49c7e94193fcbb4209582b0eb34f1c46bf1eede75a6a375478b50fbe2d2c24",
    "signature": "0x5c64956ba3ba8542214ef48176f3e2da5aacc1c871fd6db102e830ee195c870f08577cd3106ad4d4c385b20bc6ff0c9a1dc1019b6a5077819cd25d74938c8d561b",
    "signer": "0x9149C438b2FBf68d0e846EEfE2E6B19be686Af42",
    "userId": "843"
  }
}