{
"manageEntity": {
"action": "Save",
"entityId": "1253541231",
"entityType": "Track",
"nonce": "0x53dac1f32991ad74a0cf51680af1cbd4997c4675c2c1cefafd755bb73c97a353",
"signature": "0x6c7550fe4fbd2b216f1e811ced3c5fe8b96adab533850e02236c8d629bcfabf4023ab4ba76381b8bf4ba5e36ed510117d344626de54719830fb9647b3d62c6ed1c",
"signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
"userId": "714646433"
}
}