{
  "manageEntity": {
    "action": "Save",
    "entityId": "98339",
    "entityType": "Track",
    "nonce": "0xca45c38810ba0a464f09257554b6eb2ee5fafdb33bcddeaa6c2123fddc32cd05",
    "signature": "0x3fc7d1acb92f6292587571c67eee93325f1972408be4265c0d549a81e7e10689572620fa2020e1552e25d2a46202b44407815eac8a3ea48b797f211e04ea87761c",
    "signer": "0x367680E9B4EfE77a6636091FA6c2c71749Cf7C60",
    "userId": "40274"
  }
}