{
  "manageEntity": {
    "action": "Save",
    "entityId": "534383340",
    "entityType": "Track",
    "nonce": "0x4cdbc9e5a59575e2db6d03280b3e70b320148dbf1baa6ae4ac8cb3784b4f1d79",
    "signature": "0xc6acc03296cc4a5769560c97233ada8134804592d3158d8fe58c2f1a42cba0866e84f3b8b13afd9c09eff0852e4be73cb7e7e95ac9a193ad5b891a7e93c1d9221b",
    "signer": "0x05382D165a0EaD9972CD553D7Ee863cc9357a17f",
    "userId": "30491"
  }
}