{
  "manageEntity": {
    "action": "Save",
    "entityId": "2013870053",
    "entityType": "Track",
    "nonce": "0xcfccf5052d81b4ae999cc5c3ffec791fa82c8fe82db50f37090141279e3ccc83",
    "signature": "0x6531b4173161847d89e542971c088056b0e3e4e48362e0cbb973de114a723be15c4a99538df59f20191922e541ccced62ed38e4c5aac30ac7cd9768638410f401b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}