{
  "manageEntity": {
    "action": "Save",
    "entityId": "1679687084",
    "entityType": "Track",
    "nonce": "0x5356a658072f3e920cae94fc21678e07deb05d91288a679542f0e97ee208f7ae",
    "signature": "0x85e95bb9a530e690ba4c20a972cd963fa6ee619fcf5c0ab9c2b48ffd4d9237263359e849778b37e0f8cc125d64c896c7ec332e490a331b923d4b5a48f05f19f11b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}