{
  "manageEntity": {
    "action": "Download",
    "entityId": "1450008658",
    "entityType": "Track",
    "nonce": "0x749b96da4365d9d22756b81792bd3fcb2d3829a73ff26b33427c39b95f7bcf16",
    "signature": "0x03fc0c79938a9cfa6912609d574909b6c680d448e6edaa6ed9496085c78e5fb10c7f37db889a0b662dd341d20843f07fbc77539b3cf70f7040cdfb94111ad7161c",
    "signer": "0x6728AE713808836D22A2bA39b2570131FD8815c5",
    "userId": "207448528"
  }
}