{
"manageEntity": {
"action": "Save",
"entityId": "1532509140",
"entityType": "Track",
"nonce": "0x62e847cfa741d3979b3883e6ee0174f230f4782941b9675952407b91d60a8992",
"signature": "0x90ad1cb5418d7306bc01b39b5bbddb1c051f11c5e7244c31f9b9cb323f0c724451e11ec57e5c89db638e43eabcf8ff4af5e13d00dbb8e51bc16679ce6292f0411c",
"signer": "0xaBca4973b8911Fb110a95E6e00e5BBFBCa671473",
"userId": "832058678"
}
}