{
  "manageEntity": {
    "action": "Save",
    "entityId": "1009033300",
    "entityType": "Track",
    "nonce": "0xacf39badca55ccb125cd9f6ee903dfd94fb292f5cd37a8a96d55816d2fc60dd7",
    "signature": "0xb2fa7d6708753bde601468f45af526dc4cc71836a9f153c64d4fb35d2d2661243c1de564808cf343f7b4696df17e28b06045d8ec8eda8da0171f7e5a64aa867c1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}