{
"manageEntity": {
"action": "Save",
"entityId": "1489912050",
"entityType": "Track",
"nonce": "0xfebb7b14459d06f49956a211a475172bd61e39d3adea3c757c76cdf84c0fb3ba",
"signature": "0x164ea35a88bbc5a8ddfdf9a3b37e80a33b798c24b23465c09669c3c9ad943b4212e556f9df80028adabd21a8fb6b0868517bc8a9cc028a7733620a6ca2626d0b1b",
"signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
"userId": "632918751"
}
}