{
  "manageEntity": {
    "action": "Save",
    "entityId": "151106",
    "entityType": "Track",
    "nonce": "0x9111a4095a90f572d37df32cd75f5250fffc208ef6820c7664bb40c21b527f10",
    "signature": "0xc922efe72eefe4c198dba7339376aa96f738215d9c66111691705a2769a530d945451a107c79a4e0fd3bf8acfe051d0342a95bf429c68e197a0db8f445c344a11c",
    "signer": "0xEcFc1211BbF19890F066193bED8925bf57de28ea",
    "userId": "301373"
  }
}