{
  "manageEntity": {
    "action": "Save",
    "entityId": "2059689716",
    "entityType": "Track",
    "nonce": "0xf1da3970014980e83cf744559d0ff02ddb9dba8f73471b3fd02ed1ee14c7f34d",
    "signature": "0xf45b0ff6600bf12930f8b2b6af9cb2c09353b440efca0db95fc9e951e78d141e02de07075969257c0fdbd7adc6f73649987640bc1ffed6e2f4acf70e243d10561b",
    "signer": "0xC56E1ccbA93c1E645e5F27Bf8A5ca13eB7A5eEbe",
    "userId": "335878078"
  }
}