{
  "manageEntity": {
    "action": "Save",
    "entityId": "1764211468",
    "entityType": "Track",
    "nonce": "1794072990069504610",
    "signature": "0xe442a93bda576ef8d630359e2bec414f2df6011ecd53f27886797a239ac7f55e637bd4c13d5e0165fecc48e7d450e58cc2faa79145f0af9f84d3fbef88ee20a71b",
    "signer": "0xd7dd8A6F65fD302Ddff6E4d91287C3246D347397",
    "userId": "724724984"
  }
}