{
"manageEntity": {
"action": "Save",
"entityId": "987048978",
"entityType": "Track",
"nonce": "1792522363344195674",
"signature": "0x766f59f6d9bdf9d4bcf18aaf1fd84f5805ba6bc57dabf9f8482b689f649892406be6402d2204f1517eea674940caa61c0ebae15f70da2fcbbdc8c4308ac200e41c",
"signer": "0x1007e09532BE90331E035838A9E2E0700bB9741a",
"userId": "329513359"
}
}