{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "979358380",
    "entityType": "User",
    "nonce": "0x91f6d3cc305a2d98f188e0d38389161c4564df5c85c7f9ee43d81973ac2a4d23",
    "signature": "0xe9354c6b08fda45c0ccc25cc2137e168816d7e725ba0c868383772f354dc7e4c459f4c87a0b2c573cd63ff5b9c7c918427b19db4ee4a43f9d9a04eb34a4fc9cf1c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}