{
  "manageEntity": {
    "action": "Save",
    "entityId": "227485",
    "entityType": "Track",
    "nonce": "0x3d00b98cb9afff0babe151af3aebe83b745fa2425c427b426b0334ad38950c30",
    "signature": "0x4dbbbc5de1ae73160e95db05cfe08fae7d2582c91cd6b5dc94dd0e4f70f726b1487459efd298ccd6b55401a5a36a6918336f29b7e675750a94fa77add633f4561c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}