{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "871515630",
    "entityType": "User",
    "nonce": "0xef90e7524c45e6f045641d8b3682db2fbef04442f75ad778bb126f9300c00686",
    "signature": "0x0da367ba9c0b722061d9f770f9721fffbf28abb2696f7543cc6fc06f5c140f0d3e7d3951ebf2c3c36cbdab33fc477e70731467435dc908be2810da16528f63fa1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}