{
  "manageEntity": {
    "action": "Save",
    "entityId": "24419040",
    "entityType": "Track",
    "nonce": "0x031460fd9a7c617dd949e76d549feab355e69fc38c40d88ac9416cddca773e4d",
    "signature": "0xbc8d07ce1773e3b90b56556f1396285027074c437da69ff3751158b645e872387d06c63142ade91989ef32d5845e5202e0eb5dc7f577e7588354410f1255afbe1c",
    "signer": "0xca797dA7dCB793742623d55EA81fb92A9566B550",
    "userId": "363062902"
  }
}