{
  "manageEntity": {
    "action": "Save",
    "entityId": "710614566",
    "entityType": "Track",
    "nonce": "0x195881c9027a512f1d386a1c3b14104d5d29b231ea93fcfa6f5fbd1a2da5b307",
    "signature": "0x8a17da53ff164809862c26d3bf043dc16363c9bdad07917e68ca1d0d5d47d1b1750cc1fbb6cc274d9889345861c093929d45ed41eb86ba882d5bdd38d7b10e771c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}