{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "575729107",
    "entityType": "User",
    "nonce": "0xa937b59102519aed226c4a7e2f437d6b65c85c99a6e75e930807fad30c60c539",
    "signature": "0xc9fe66f664e8d028896c38803eb94c0727c87384f4a3bd397c37afdf735aab5c050163b91f4eb8dba57dbfa8150f6c79ae2270cc4ff9b73e8cd637d6c9ee8a331b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}