{
  "manageEntity": {
    "action": "Save",
    "entityId": "293854741",
    "entityType": "Track",
    "nonce": "1792799421682726674",
    "signature": "0x5e10527b0afcd4aafb4c653df0cdab6b7f06d97f7afe14abc4ab0e8f8e648ff41419a3df92f8176fc4980399ef1b0221898a0606836a7b6705996f9b83e641821c",
    "signer": "0x23dF8876fD80368D375d911e3CbDFd15B8e85CB5",
    "userId": "827420993"
  }
}