{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "681863",
    "entityType": "User",
    "nonce": "0xe579491d6c258c9d0b740ececfc3044be4068d3085582df6dc2575ee95b23e0c",
    "signature": "0x379f66b3a877d1582c0c542960e38131366b4d7ee0ae7dbf434d3f16d629ce702ac26c1904f04f440f56049bfc933941af5722732f03b0bf504488fde2fd038b1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}