{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "556556826",
    "entityType": "User",
    "nonce": "0xb615d32ce6cf35e18a7f701d3892fe78d943b5361ae29ca289652d8ffc1c0d41",
    "signature": "0x935ffdb4100c290329b73e45b190473a01c6afc7f620ea312af117b82710efbf5504c2712baa731dbb27bd9524acdce32827304c861407663cc0ce3fcd69599f1b",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}