{
  "manageEntity": {
    "action": "Save",
    "entityId": "571276908",
    "entityType": "Track",
    "nonce": "0x58fc02eed4b546505fe9437e00dbefe6242254ed0d5057ea9b931e0b09edfa27",
    "signature": "0x53cdf5e9dc35b9a4114501a433f13ae2d263d03e954c39419e9007032a23741b114880d60f1a2c01e795a0fd3033010ea4c35b95be67f205ca267158ad7beae91b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}