{
  "manageEntity": {
    "action": "Save",
    "entityId": "123161354",
    "entityType": "Track",
    "nonce": "1781113249413286198",
    "signature": "0x87f15665a0df4e7dfe7993aa6bd98d9feb003a37f0d6c9ac5c0e18ea5742107b521dca8c7f4aa89715ac5e9e4876cb85ab6185e79fbc6494ea373c60eb5da2e41c",
    "signer": "0x2cc593FC814461263d282A84286Fd4F72c79562e",
    "userId": "175201368"
  }
}