{
"manageEntity": {
"action": "Save",
"entityId": "1235257551",
"entityType": "Track",
"nonce": "0x54815eaf7470399ed909ee6d70eb76afabde541d9ca6fde580d13744767dcec5",
"signature": "0x8ebebc6bb02e319cb7acce557dc91458e31cca5faee3188c2edac010d368870723732ccb8fda3764c03f52e8486f98d6b150f591782a0f649dd35a533d0d6f611b",
"signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
"userId": "824478223"
}
}