{
  "manageEntity": {
    "action": "Save",
    "entityId": "1173833820",
    "entityType": "Track",
    "nonce": "0x607245f0687993d6f1b8fb1ac0011408e007db552773934207e48dc9f123337e",
    "signature": "0xf9fc96cb7fa924df4d443e0d16fa5f6ebd520a6d9a39cfcb36cfe1eedf9c62730bdfd6708d0e27f06dff0fe4c468b61f75ac7c3e2f58e72c20040e44e21eff2b1b",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}