{
  "manageEntity": {
    "action": "Save",
    "entityId": "1679262788",
    "entityType": "Track",
    "nonce": "0x85a13bc3171092ee0e9a8f97596449fa49e5ef59a83faab722191311d78b92b6",
    "signature": "0xab8eba72de6a5e3355680db04822795ff7aa2bdd1a76c16f307b3437cb28596643c4c3202c23ff3c833a9b1c8173626199efaafc75ea5da03f5b50f098226e481b",
    "signer": "0x0Cb8508DC22f3eC228338F94fB8B4063F7418EDF",
    "userId": "496554695"
  }
}