{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "520381623",
    "entityType": "User",
    "nonce": "0xdb6855b04adb3106600a254c492674e77fddff6651db94484681d6baf30b7cac",
    "signature": "0xd822ae74ef21eca21413620811a73bc47ff6c86e09b58d1574a444c918dd8daa31920eeab143ed48b2012266e9ad10807b2f8caabbb924bb068f154ec55617241c",
    "signer": "0xE534A1ad2e8E1f616866185D1efDf463B0eD38b4",
    "userId": "353625"
  }
}