{
  "manageEntity": {
    "action": "Save",
    "entityId": "952333",
    "entityType": "Track",
    "nonce": "0x1f0d5647b82ae3d33d424187d6766049eb3712e97e41da9544ecb6f97b30263e",
    "signature": "0x5599ed4b8259b6e8ceeed9ec324bda49d0dd0369b3d227bac8848ae51674c218571ae39a812a5f757ae97f00de94b40f887c689d905582ee05a0c0e80b91bc191b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}