{
  "manageEntity": {
    "action": "Save",
    "entityId": "2028464977",
    "entityType": "Track",
    "nonce": "1791493292903271490",
    "signature": "0x10c3538f1f1f0e7a55e8a4bfa0c85d01ed44e3071b4487bddc34817fea306d850eff64f2532b51fd467822d2ac960b86f66ea8adc85113cf2d4d49b8c1d824ad1c",
    "signer": "0x9B241b1a6A99d662AE67D328e091Fc94faF23fdc",
    "userId": "881446128"
  }
}