{
  "manageEntity": {
    "action": "Save",
    "entityId": "163430",
    "entityType": "Track",
    "nonce": "0x2c02ba3ae93c0360eb28d0936b65fdae85dbc50c98437c7c2677b6b0fde7986e",
    "signature": "0xc826fd3bfa8ba6af1c2df14a2530b12c5e2f56e686737f39b3c11eaf987a298c0ebcf79fbadb2b864d600ee6d0feea868ed9fb6dbb1b89e74c01397078f27ff01b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}