{
  "manageEntity": {
    "action": "Save",
    "entityId": "2019079165",
    "entityType": "Track",
    "nonce": "0x7f6c7103a3bb432ea94715366cd0df43b6fa8d9b1351f983236a0e31ac4d80ac",
    "signature": "0x7c4e239e47905e975f7469dc5e56c3005dbddbdac1b98e9143aaceba481c1cb00f7dfbc640218cf4cd39ae5899af03bff1349a9cca66033cfa7cae3e9c9a6c121b",
    "signer": "0x7425EdbFdF528603A88c658f4cf8B1396a8a77F5",
    "userId": "406225571"
  }
}