{
"manageEntity": {
"action": "Save",
"entityId": "1121247170",
"entityType": "Track",
"nonce": "0x214901a8ff7bd485172f99925e85476a79ed6a8b69f59c50f1932292147fd33c",
"signature": "0x12c18e8ee6a486b6d0fa18473286760073903fd53adade58d706f56d262eaf9460eee6bd602f050c7bbd34086c8135b83b03b332c517facbe3156046f6ba1cfd1b",
"signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
"userId": "636236864"
}
}