{
  "manageEntity": {
    "action": "Save",
    "entityId": "1735925730",
    "entityType": "Track",
    "nonce": "0x1808109e123a463fcc3b1457f5dadbfde22db44345bcd025b381f489a4e97ec5",
    "signature": "0xc7cdec757e6329fcbb058cbd52476b45cb1f8681a897d580b52681c1ddcd83b831a66c027ddbefe82894964efd49a7582c5c24fe1164127845a49812e2ed7b4c1c",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}