{
"manageEntity": {
"action": "Save",
"entityId": "1300375109",
"entityType": "Track",
"nonce": "0x2ffe6bd34e5224553eac3a4cb3b5776b39d887ea6f31229d84b70fa6b7655272",
"signature": "0xbb2d04e0043ec492fb866503f668c5ef4293254eaa93e09f2b76adbd3d4ec2fc6ae12ba160ca435d9532ecdb1d74ac1abd1ef39547eee2552284520ecac228da1c",
"signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
"userId": "714646433"
}
}