{
  "manageEntity": {
    "action": "Save",
    "entityId": "1104247",
    "entityType": "Track",
    "nonce": "0x7f89d6507d9d0abb5cc64594dfb60bb936e3eb3464c04f4daf3023672a36443d",
    "signature": "0x99bee200be7b4c3a204b1cb45e5cd37794b70055884a9a3c8df123c70d92da181d06d88153030df3e758227ed3dca9836e929d8eb6a51b4573390fed945b0d871c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}