{
  "manageEntity": {
    "action": "Save",
    "entityId": "1692765476",
    "entityType": "Track",
    "nonce": "0x800bae34852d955e87e29574aa6552d2dbb92d48c4545cff40c7b53f88b5c632",
    "signature": "0x11d22f2d0b85e9285781d589663096ab9fcb287998102656cbc5488285628b910da69851c426f88ad819b7b67b1301766cf9a685e5e7147ce6f418abbdbb424d1c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}