{
"manageEntity": {
"action": "Save",
"entityId": "486656983",
"entityType": "Track",
"nonce": "0x5bc5166349c20c398a4f4d371cc244bdfd896a74bdcd0c69fcc717fc0887914e",
"signature": "0x92ad8fa2c7d6d1daee34aeb74bd7f466d49bbfdeaadc143c55b1d54697d3a8960562682ca9ebc8604ff4971b90aa048ceba4eaba4d9890d5424ab5974ae564181b",
"signer": "0x4dafC3e774A1033C5604372f17ccBDcE545f478D",
"userId": "889450527"
}
}