{
  "manageEntity": {
    "action": "Save",
    "entityId": "238860948",
    "entityType": "Track",
    "nonce": "0x03f8ac60f1fcc25f490f98dcb8cff2d4f6be14b026ae72c33e0ce467f10d1b24",
    "signature": "0x13f599dbaa2bbe06a5650bccfa4dddbe7aaf4268c188750491d05e0a007f23de3412bce0026550071e32570e94d3be8693f792c1156cab957162631896dc799c1b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}