{
  "manageEntity": {
    "action": "Save",
    "entityId": "1763109084",
    "entityType": "Track",
    "nonce": "0x44e4d9b4edf95b07aa71b44979704eda10e1fb824d467696b56c8550fa9572e9",
    "signature": "0xdedf54a784b99f586486d05bb674780ef3d475daaec0acf8826ac4c69df5ccf8415387d45bef68f41f1a4bb65711461cefa6ebf4237784964961b4f08dfea3c71c",
    "signer": "0xa8E11aa224d2579f5cbdb912866bCE84Eb10f9dD",
    "userId": "951616224"
  }
}