{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "324732",
    "entityType": "User",
    "nonce": "0xeb75bf6f6b15a38a5887b1c1fb3fcd1bcec05029751b94729bb1ff825c93aa5b",
    "signature": "0x656e2a43dd42f663b7818a737e2e8f4104285ccd15c65dbd3822c9a8d5ad1b21019f6dfb35f5942297e9878d54522b2f1a795d985b40d360384ffa0585c72a491c",
    "signer": "0x3256Bd2D0B1984E7df4FA525017aD9bA48470760",
    "userId": "51"
  }
}