{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "121906",
    "entityType": "User",
    "nonce": "0xd8ad7e1d74d39a3d683fcec6816406eb9a7dfca6af5c5efdf41ed5bb5e9ba794",
    "signature": "0xe5be65e4e6af605232d211f5ceb3ecff93f346d4b35e07a59f5b6ddf9fc43af61954e806da2568593566f609e63e12b8ae275832fac28c0cbec9e3ecf29cff6a1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}