{
  "manageEntity": {
    "action": "Save",
    "entityId": "2027341262",
    "entityType": "Track",
    "nonce": "0xe25c6ccf7d45d1db525ebf901ef79c33cc3c3f75a62b876492cee8533dc2d86d",
    "signature": "0x25ee56ad0de663129bb83a2416bbd973b59405e2c4b8f95e9ed5b42892c4ff7623a7f8077a72756dbbe75864492641040a56b1ef53d008b7aabbd289d78bfd8a1c",
    "signer": "0x4fdc03E53311BF6b1B8728dd0Ae0630bF74176f1",
    "userId": "162770660"
  }
}