{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "545926315",
    "entityType": "User",
    "nonce": "0xb5ce667e501314680c32b43de4df85b70798714e06afaedcf905b930f07b8146",
    "signature": "0xa40db4f9f835e2b3878ca3e3e2822c89dec5d0e2dc598d9f4f358e4fffa5f35254d5134214b8814080b6ae488dba3ebea2c5b3e127c5203237920a9bb91518f21b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}