{
  "manageEntity": {
    "action": "Save",
    "entityId": "986776864",
    "entityType": "Track",
    "nonce": "0x75085becd8add93230245597d237e666bf9ce78c1c5226427df3269b47293cbd",
    "signature": "0x43874cb5e62fd078a3b81db44196d8769a7948bbc077209336773a2997d8042e46c9b168035ad755d42d3db20ae10e50f2ef96c0e0807be1b927e487277ae4101c",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}