{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1053953",
    "entityType": "User",
    "nonce": "0x8b878d19ebe6d9ade3e9c2975ef5fa746086fc26347952d796d433800e0caa65",
    "signature": "0xb3cf43102b6903c8894937314ce27650334a87b3beef844d631c53e13384557b27c82b2521cfe2e889e225a070b66cb63fe06b03df3480d42cb5df9dda1ce8591c",
    "signer": "0x40E8E224E8F8a9f835e4dc8851Da72DCEd75986F",
    "userId": "504092010"
  }
}