{
  "manageEntity": {
    "action": "Save",
    "entityId": "1050429",
    "entityType": "Track",
    "nonce": "0x38e79de0cd0c139058065b4edd502feaaabc2a9da88344251e54c9cec2827aff",
    "signature": "0xee96773b44300befa29567dbabf30770a165749b648cc72c5eb707bb1b2ea6a22b3f38d0be3b2274253cd8f53f9cbcc55e20c1043d0761589e7888b663694f431c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}