{
  "manageEntity": {
    "action": "Save",
    "entityId": "80359",
    "entityType": "Track",
    "nonce": "0x405454c1e66e794eb0e3764bd124973600ef0bd4556a991b95b19eb094ce3b86",
    "signature": "0xc60fa060a0de8d402464967d722f8fa6da2e9f0ad5be2d3894479cc8117e82c0738a1e1929151547bdfd82f1c5ac371eac46409ba2f512c563c41a01359347791c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}