{
  "manageEntity": {
    "action": "Save",
    "entityId": "267880",
    "entityType": "Track",
    "nonce": "0x9411ee4a92573eb7c0688e1c5b40a028451a717526439edf0e395e7b9557778d",
    "signature": "0x2eba78139156d53ebc14156c1ef27179e9777321c66bdecbd7ac67cceb766c1611abc16966cb2b6d874ffba0b9cccfca2fe88522dcae4e0af3621bd82d91cbb41b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}