{
  "manageEntity": {
    "action": "Save",
    "entityId": "363466508",
    "entityType": "Track",
    "nonce": "0x44f38e16080d66ffb341ebf550a487f6dafd2fd7010a77aa10fbcce9660fac01",
    "signature": "0x189f3d40e0de51f161215c6a69fdf35113fc6d6563eceedc411536db127f708a14368bbc24bfbdd55f406665f772f871db272e38d875ca9271850feba3d240cb1c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}