{
  "manageEntity": {
    "action": "Save",
    "entityId": "1531083820",
    "entityType": "Track",
    "nonce": "0xfa18eed04b71cbc7f81cd751762989c84031d6f11390883ae456fbc624d1729f",
    "signature": "0x2e2b27b357473bf28429b3e374e420147d45e8b3f9eaf65b3aca53ec978db36e3da057d26396e9c2fdc45a346e8c765176a49082cde02e7ab7f78e9020923d4c1c",
    "signer": "0x6F2075896a6E450719f8391Fe9381d10e8Bb766f",
    "userId": "951546743"
  }
}