{
"manageEntity": {
"action": "Save",
"entityId": "387290205",
"entityType": "Track",
"nonce": "0xb7d45af87067e986b06870cebd1b7e6e08e8bda7804a2c1efb724d6f3e544236",
"signature": "0x2692d505c16d26e938543d3d9f1375d8edf4191f296b245391e8a1bcfb23216f7fd522f0855a4175642fa75196f7437640a9182318642a1204e12570474fe9d91b",
"signer": "0x6245d270201FE6e26477efA986E8C4035bF65C71",
"userId": "36222594"
}
}