{
  "manageEntity": {
    "action": "Save",
    "entityId": "1242970415",
    "entityType": "Track",
    "nonce": "0x698079b1a14f874403f09a35baa6ddb1b305197d8a62c7661ccb0cb406f50170",
    "signature": "0x1aaa7bb6ec843eee0795708a18b748f994f6fd7067cba282393d2bac8f890b6b250ed82668e6b7cede46b6d3cbe2503dcbd2a36b5c3155157cae7580bef8f1161c",
    "signer": "0x796D60E9fE921C82Ef20f6329e27dD246392f542",
    "userId": "809803"
  }
}