{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "923480019",
    "entityType": "User",
    "nonce": "0x7fe2fcb61f46e5b873aa1021245ccd80c87294a785aa5eaf51adfad819f0830e",
    "signature": "0xdd9436a85648c194475b4259c79c8a5a91e03233680714186d183ab88727e62f7f6f4bbae642e95a6408783f1089c701d0ed56cb5b0eed6d18e1beaf401bfbf81b",
    "signer": "0x03b70C3825d7b9e568C53C89a738061d855d0dec",
    "userId": "578849678"
  }
}