{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51189",
    "entityType": "User",
    "nonce": "0x2139bd2ced8a4ad12a953562f893f4a7b895f537dc80a2ee3fd3604316349c59",
    "signature": "0x0c9dec049fbaa0c9edc97cedb196f966b9bcc1048b1572d782764c4338e521d34b7109580203fe7c5fc9431d4aa9d47ffd1148acbc68927436c6f0a73b9bbcc51c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}