{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "759418",
    "entityType": "User",
    "nonce": "0x8ec3ac3328f191eed1283250380c081fe8ad9e7dafcb62829bc12fbf0b75940d",
    "signature": "0x35a86c7f50c357a11f066d1a91ed786b3cdce0f1449107873edaaae4fb06b0df16df4812f01913d231f4228ff6a9fabf54e184e96cb032df5c94f08663aa97c71c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}