{
  "manageEntity": {
    "action": "Save",
    "entityId": "1745953830",
    "entityType": "Track",
    "nonce": "0x5931d009fa397a9ce1f38fc6173f7fb6516032dc0bb28443a7e9a80d4d85f04b",
    "signature": "0xc6d32a318828b2d99b6488efcb2fa0495c981a287575bcc008e1e6dfd7f0f8ec1e9ef723cb786afd6a352fabdc28b501874a36618c327cdb5d84715c04e50ce01b",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}