{
"manageEntity": {
"action": "Save",
"entityId": "1445121012",
"entityType": "Track",
"nonce": "0x3258aac0090aa1fb968393c1e368d560c32fa9ec037604a89551805a8bfe80e3",
"signature": "0x237a764ab945f2e6dab729283d38a24813e3dc23cc16895da2bf8f52ee224ed92c86317c2e5c1aa71bb913777caec99905f88dd486a1766e12453c5f1fc2a4501b",
"signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
"userId": "714646433"
}
}