{
"manageEntity": {
"action": "Save",
"entityId": "1959843198",
"entityType": "Track",
"nonce": "0x2a100d02dde23111ab77e68fa8ceb037c14c76638bec6f177302ee383ac63e8a",
"signature": "0x1ceb84b5553ab01f3edf91b1f2aa78c5fe47145c5fde40a28748bbb34069ee0f3b25bab9b5eb253a925d07b60af469b7e9333b4a3d38eb2caa83cbbeed308c3d1b",
"signer": "0x568426a5D555ADe94657d547B2Df4a4dc1f0C014",
"userId": "71569007"
}
}