{
  "manageEntity": {
    "action": "Save",
    "entityId": "165110",
    "entityType": "Track",
    "nonce": "1786828009116130478",
    "signature": "0xd4938de8cfcd8112122b05b4806e8f7d3ece0bf5ef319334607ad59b5ccd3b4e06f459361e4870b651aa478d3ea5c45faed8fb05e98c372595408b69da638e421b",
    "signer": "0x6620103988B969bE5810F1B5530c1A44Fe6048A1",
    "userId": "568518925"
  }
}