{
  "manageEntity": {
    "action": "Save",
    "entityId": "1017516017",
    "entityType": "Track",
    "nonce": "0x0a35c1f510986aa0856ff4c3fcf3b17d136606cf8777e82fbc89627d549dbd92",
    "signature": "0xcdfaefdfbf020034181be0a37b1b35d7be8cd8b117f5f228ecbb4af6197a1278326e697dc78902baf54527ed9613fa73cb61ae07c450d01a48395fc90198cdf31b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}