{
"manageEntity": {
"action": "Save",
"entityId": "1486786286",
"entityType": "Track",
"nonce": "0xa23faefbb844a98fcac5b9787eab2b38082cf4ec3b7238467f5398f536b712dd",
"signature": "0xdfd2b1c6728c4201d39cbb0dcf69a3a63b2200ecd9d4b7c025f08e1a209b29922bee415bdaacb72e0d230de77442f97c5252d8a1ef7bd77581be890476a307961b",
"signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
"userId": "100976759"
}
}