{
  "manageEntity": {
    "action": "Save",
    "entityId": "1710341364",
    "entityType": "Track",
    "nonce": "1790139026117591520",
    "signature": "0x14a5f502da88c5036c934d56f5f56df03a75dcc0189042f70194add815553c62708fa947c358be3f930a1422947981c287715dff28e69e916dec8f00e44d2af11c",
    "signer": "0x23dF8876fD80368D375d911e3CbDFd15B8e85CB5",
    "userId": "827420993"
  }
}