{
  "manageEntity": {
    "action": "Save",
    "entityId": "1592886471",
    "entityType": "Track",
    "nonce": "1792299674872524573",
    "signature": "0x29f98b78449fa0f14bed65b7e932782242fb4f9b990615232ddc20cd8dcbeb82381544474b3010d69c94788d1521aa5b8d7e8abe05fe65a1d6ef37490a46bd1a1b",
    "signer": "0x9B241b1a6A99d662AE67D328e091Fc94faF23fdc",
    "userId": "881446128"
  }
}