{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "978464946",
    "entityType": "User",
    "nonce": "0x357297ba048178d66a6f1e9ddc6af9f33800a73433d3f97a94f86aac178ea035",
    "signature": "0xf20d761d160746ff938300906b555c237956d6eeb010b359210a590c26ab0d2340e1d1eb5cc7d6768a2e3fa2fb075f1cbbe52b49b2c3c2c2a2925e879a32a67e1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}