{
"manageEntity": {
"action": "Save",
"entityId": "909656728",
"entityType": "Track",
"nonce": "0xce1301586e0e55e54411f6d754a95fcd8c9a9031efe950ad8d73a80733ec9433",
"signature": "0x13b9d3cfdf95cb80e719a664038840fa80bba6bba2f518d9b1a995d9637a77f11f7cd8fe532205acc43d9aa12028c4bc51cafdaf146cc2063cfb8465d00239951c",
"signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
"userId": "632918751"
}
}