{
  "manageEntity": {
    "action": "Save",
    "entityId": "926004849",
    "entityType": "Track",
    "nonce": "0x4bfc00a5c68a68471d21064142cf0ec6f0c8992c0e9207de49607851a2762daa",
    "signature": "0xb0aca4e6cbc4e5acf4e5811b4121dcd931b37a72a049b7e1fdf77c7dfcac8e8957074edf91a97c6091ca7ec8a3e3ec97ecdd0f91fceaeeb2ed1b82654df7a8311b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}