{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "620307004",
    "entityType": "User",
    "nonce": "0xec5360cb13d75b256e706e43d9557b65b79e68956b92e76fee48ed233125d257",
    "signature": "0xf8b80c149e0c54e7cbe721de0dcf8c6660426ee8c9ea2851fd8e56a24341f4666752a54927cda3adea3cc8b574df5355d4aec108711e968a950a425bbabf26b91b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}