{
  "manageEntity": {
    "action": "Save",
    "entityId": "1308221612",
    "entityType": "Track",
    "nonce": "1792326101815321185",
    "signature": "0xd7aedc96d5bb09b80f7499d797d755defdc76ee7c23478a4ba4fd67dcb6b73f053911a6932edd6421d9d348826ec40cc490c140faa802529c1ba6c0b7598e7721b",
    "signer": "0x23dF8876fD80368D375d911e3CbDFd15B8e85CB5",
    "userId": "827420993"
  }
}