{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "42575",
    "entityType": "User",
    "nonce": "0x2a930f794799be3ecbc174deabc7656738827d13a52447b5730a7a13f347d2f1",
    "signature": "0x3344de2847af251af8a018b44973d676c3aa5a97cba7cb5b250458ffd101d2ae745013e6a6f949e579544254805aafb26eeaf12444f216528c83f711595fed8a1c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}