{
  "manageEntity": {
    "action": "Save",
    "entityId": "230364771",
    "entityType": "Track",
    "nonce": "0x60bbb3a28b04f1759f0e5da06c49018cc683431a8bd5ce9e9fbcbd031fb6fcec",
    "signature": "0x3c9aeccaf6d7b11b766c8a1309f7abf7b925ef7759eaab1d7a3211f4f869fb464ae49e5c65df91102837942bce6e8f5598ee5e1ba76cf04b841cf748e6b60a611c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}