{
  "manageEntity": {
    "action": "Save",
    "entityId": "2025796664",
    "entityType": "Track",
    "nonce": "0xcd6d14910803add6ecbf74d4cecb452c01bfd1c4936192dc9d082de2b2921bd3",
    "signature": "0xf84d8d97524136c785d0319273383a1e61c244133deaa30ca3396b6d6abae08978b99261ed06e882f608e0ef7ba222e98aa6d1b5dae23d70b63b9833b8faee641c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}