{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "257534016",
    "entityType": "User",
    "nonce": "0x111066cced9bcba228d9d4bc5dfded913075c431fb2a927a8bff67734854c036",
    "signature": "0xb382cbef921edb59c6ef8ba20b2236f0ebf73869fd82111ec9e833ed771de8a50ea3d90df8ac1ffc93f8be5cf9817b4302bf065b24c0904bd6859f4c3ce5f48c1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}