{
"manageEntity": {
"action": "Save",
"entityId": "252572",
"entityType": "Track",
"nonce": "0xac4ca46f71f6c05e38e30d65a8448b5b5f894db5a61e1a13cde8fa672aa87ddb",
"signature": "0x8fcccf49124a117db0df90a2d244bb3317fdc727228c938856f172a185bc8ad453e836032661aa8ac76401355755c2dd2c4924a574b9130245b0fb1ec699a4da1c",
"signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
"userId": "714646433"
}
}