{
  "manageEntity": {
    "action": "Save",
    "entityId": "694689053",
    "entityType": "Track",
    "nonce": "0x67c2d370e739c615afdb6a8a7df156bca9a79f2f8f8db0de0e41a5fbfade94bb",
    "signature": "0x865f07bd72e760bcab6cd3a7bfa8aefed2b501dce069cf7cd76c1cfffba87e1f4b2fa8b54e55f975bfc1faca52db9835c20d652370fdfb5501e56d30a37bc3ae1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}