{
  "manageEntity": {
    "action": "Save",
    "entityId": "653324",
    "entityType": "Track",
    "nonce": "0x0bf862507ee69e44c7bafb275f423d4f1dff4fd144494976634b090b76f0059c",
    "signature": "0xd11769df6465f3ed76b4f7a9007b8c8a7956aeb690f4c8913c4222786bf394f60d628d3513a00110c97d1af81ae349196c50aacd4007768d4ea59bd32194b9361b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}