{
  "manageEntity": {
    "action": "Save",
    "entityId": "839396302",
    "entityType": "Track",
    "nonce": "0xe3695961f83cc485d06abdbe2025b6977fc757c7a13385235c43498531faca28",
    "signature": "0x600647ba01d9fedff47e0cfd06bcdc9740cb6a7197a1ae95596243598a3e12b019b5a2627afe2ea53ff03241f84445069d865442c44c04f03b106427c48c941f1c",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}