{
  "manageEntity": {
    "action": "Save",
    "entityId": "797353",
    "entityType": "Track",
    "nonce": "0x4a219f0194b6b8ce50f86983d286de883ced518bd57256596d497b70f3b5385a",
    "signature": "0x2c1ee1f20359228778237ed5e5794d755d46017de88c71e1803646cfa45af31869910dbe6fbdf79b3b27265d57e38e38c1c057dcd8a64525ba2c739f8afe686b1b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}