{
  "manageEntity": {
    "action": "Save",
    "entityId": "43006759",
    "entityType": "Track",
    "nonce": "0x86b741cff56c3520c2d28ce75dfd6af35ff9f812c5276cea0ebaeaeb0826b3e7",
    "signature": "0x470985efec818922dd80023b4836d96c72235e8f673dcb870d9ac0b1e08da8b73e4dfb10bf3bc1a943cdf0c00ecee5d025a0470550cbcf3924830e6df0dc46321c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}