{
  "manageEntity": {
    "action": "Save",
    "entityId": "1094246694",
    "entityType": "Track",
    "nonce": "0x916a232088e4988fc091698d5921c4d79ffc11008cda7b3c0104413ea268f64e",
    "signature": "0x9036090f7e439ded9cf93d23052c7ce12b9bf118672cf73ee1db5c094604d300781c69fbf525302fb7da7a30b8df2e37cecc5082cfda49fd1d4a7b1648e04e731c",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}