{
  "manageEntity": {
    "action": "Save",
    "entityId": "246351066",
    "entityType": "Track",
    "nonce": "0x4428c0fd16c730780707b04fbcab478b74d8b8d6d3abc18c97f682a325c39e08",
    "signature": "0x495bef79ff6d861db9c0bd0b1469ac5b2d694b70665cdd581f02fb21483d5fe6633eb4e52108d661986c228b4400fc8dafd7e456a75407c62306c143a32647471c",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}