{
  "manageEntity": {
    "action": "Save",
    "entityId": "1216667827",
    "entityType": "Track",
    "nonce": "0x12208148f2da7a178fce7751c8c221b33cb709330aa70a3178e10bdb190db276",
    "signature": "0x60cf77faa33ff4b3fe9feb5b346863c9ac14edd0bde8ff71101f07de2c14a78661b3e2ddcab1b248a46e07b87284dc29ec88e4824c3ca67875d78ed6d0e11f771b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}