{
"manageEntity": {
"action": "Save",
"entityId": "180517432",
"entityType": "Track",
"nonce": "1792340777372857863",
"signature": "0x526380d07cd3ccda31fbe4dd90830016e8b18cd4928b908fb4969b09028bfd1a309c6672077a37348a0e485bb08d05695da3116cea9e9831bb0f2949900b870b1c",
"signer": "0x512F9723ECbDB6Dc537A671b3D2fb35CC68017a4",
"userId": "105562689"
}
}