{
"manageEntity": {
"action": "Save",
"entityId": "749187884",
"entityType": "Track",
"nonce": "1794302221526265018",
"signature": "0xc0aa4c87a6dbf485683b1f0b167e343e5776831b590be7dc546d28255cced4037426e00855a9f935f666952a6e1462b1b5f9fd2425eaf41fb8d2a38dad8c4ae91c",
"signer": "0x23dF8876fD80368D375d911e3CbDFd15B8e85CB5",
"userId": "827420993"
}
}