{
  "manageEntity": {
    "action": "Save",
    "entityId": "1177764595",
    "entityType": "Track",
    "nonce": "0xc84ec4b9fd27b64db02647e5613ddfc7aa7b254bb522f4f6d1059539588ed452",
    "signature": "0x03f8dbae12bdab0d20d532e47447884d01840697cca92304e60b49a595a1ccaf3f2c484c713b8fa2cada021ed9596c7b6955967f7acb1b3f72bcac701e11adfd1b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}