{
  "manageEntity": {
    "action": "Save",
    "entityId": "927655110",
    "entityType": "Track",
    "nonce": "0xb74b52341d978942fb52e93a181c736cdfc9d1d9711eeac7146b97384a145df1",
    "signature": "0xa1ded58f635e96229a1a3f9febe5ec4244138109fff2edaa5eb637adfc0b628a0985150b8898409511120f914e929d97e6df7b874feeaee9d3f8772d7ac711741b",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}