{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xaaf51c38c65d3be58aaf59047cbb66491434dc45755d4bf3d490f5aacba5f579",
    "signature": "0x190b5eb373b36c89369aca7a7ab35b3121c8125d489442f24beb6f1722795f0a6b4e118fe7af928f081a9b9395eeb66c6c968085b2f77f004f782b329edaa46a1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}