{
  "manageEntity": {
    "action": "Save",
    "entityId": "1162915506",
    "entityType": "Track",
    "nonce": "0x9a2cde03b2495e6261e449971b502b4dd04c2fbec30530b464688be0919853ec",
    "signature": "0x4be796722ae988d6d912288c48151463ba61455409f97422e8f05bf372582bde2bd0d222a00ebe23df5a65f7cf13c319a084d3b26483aff3469e601e2c8d5eea1b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}