{
  "manageEntity": {
    "action": "Save",
    "entityId": "1692151497",
    "entityType": "Track",
    "nonce": "0x96757acf3e242b892b90b6be44e7867fe7b1c80fea080ad5f5278ec79518fb1b",
    "signature": "0xa8d1f9bdccece0dab42d50817ddf90cf1d1f9da538aa8be2d0bccb1367c4845573fb626b69748667a99e1c8042526ac0686c125de3b491faa2a174bb78c444d11c",
    "signer": "0x767f09338Ac6CE8645c0a76a17a560429b582132",
    "userId": "520958130"
  }
}