{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "348314",
    "entityType": "User",
    "nonce": "0x557d47f4d883508b8df10e94d678fab6985623ebe94d1b0ec8296fbcaf6db8de",
    "signature": "0xd16aaf895d7fcddf20e90a7bf498e93a7ee74bec78b788b517df2eb4f2a297e55d138c049a3400c9e0f1d07b7850aa2dbd8fdd63f49739e2128ed7c631550da51b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}