{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "742907554",
    "entityType": "User",
    "nonce": "0x2f71f855bff260f423e36d36f810df2fa5b05979e7d95ffbafc3f88528a9bb8d",
    "signature": "0x8c8fca6051ae3112245731ad37b6ea495e78adb888aed62e52d58cd167232a6a4ec1bce6f3524d724685a944fff0bb116624c45a772a89e022fe8b56ae9640e11b",
    "signer": "0x67E321241D4e44e5aB5D1c365505f0F33044C7BE",
    "userId": "460631539"
  }
}