{
"manageEntity": {
"action": "Save",
"entityId": "1760477999",
"entityType": "Track",
"nonce": "0x2a5e04cab005485f5e80def70126f4c809aea20b9bb2744439a1b9dcddda5fbb",
"signature": "0x56b595adead99ca331a76716df4555a22777ff79e6e2007ad3a6be80d987bc9d1b058d13b947dfcc82d680620356a306442893499c27e39123376260ded2da321b",
"signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
"userId": "824478223"
}
}