{
  "manageEntity": {
    "action": "Save",
    "entityId": "1592886471",
    "entityType": "Track",
    "nonce": "0xc80b6994ea5454fa319e32ded3c9e0ffb3ece07eb679c9e8e9f25bf3532471d8",
    "signature": "0x32fa63a00eb1384ee4f1e225deb67d37379e4b8c7149dcfe9b64b93b27c8048f7988af6958ec2c6b5127106206dd0108eac6014c9f93236e2f2522923f55a7f51c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}