{
"manageEntity": {
"action": "Save",
"entityId": "857412409",
"entityType": "Track",
"nonce": "0x9af8b5805d65e4232cef0af36f3ba9cf2677ded961fd460656ae03d26a3f7446",
"signature": "0x5683545f64e850da2a41b07d6d8210805b9e7d62b4d1cd79fff749e8debd7571224da07540cdf5622484b4d2c1832d578c538cf9c59f7cdbcf3dd55d34f55ebc1b",
"signer": "0x8c69d6A0279c3c3181f9553414A3C98791E6CB3c",
"userId": "580405625"
}
}