{
  "manageEntity": {
    "action": "Save",
    "entityId": "580628086",
    "entityType": "Track",
    "nonce": "0x449b21caca3b76ac10b196edf671afa57e28c2a6db742675850581e2b382fb52",
    "signature": "0x8a3a2e3c02d7754e4fb52817d25f449bd2665c5f4d111d54e1cb83d95a8f8dac138da648068698d9e76d7719312260a3a424c71037449eafaf1abd336a3a06621c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}