{
  "manageEntity": {
    "action": "Save",
    "entityId": "790567852",
    "entityType": "Track",
    "nonce": "0x818477c5b52b583ea606902f9b79a5ea62c619f96e3f244fb4bf8700a7ed1be0",
    "signature": "0x55a574155d2476a5c0296e5257514b4aba8c6fd78d3717e074c659a43ea82cbd048260f971e682de24cac06d9dce955838e48900461940e0bf7dc82bd9507e311c",
    "signer": "0xdA0eFB0e7b973C487c12501759aDb23012CB5248",
    "userId": "178070"
  }
}