{
"manageEntity": {
"action": "Save",
"entityId": "1486897618",
"entityType": "Track",
"nonce": "0x9e0caa2848f19f4c15c900803b89bb12fa913c8942e919807c55421be0b027cd",
"signature": "0x1eeb0e99505f3006115629bd09c98e3bd79797807aee2269055f5d6c5d77a5463b206528c27f75198a2e83ba535886cc162f742cbbcd98416cc79f9041af46831c",
"signer": "0x67479063A246B10560F7FfC48Dba47268867417B",
"userId": "745004514"
}
}