{
  "manageEntity": {
    "action": "Save",
    "entityId": "76361",
    "entityType": "Track",
    "nonce": "0xed5b13d03c7edbe051e44f42cfcabe097fdbcf4e538e476a2a490908c2ef16a0",
    "signature": "0xcfd649daa89652334567a97141b3d27edd25496e91a58fb383e7812cd855b8307a523bbea253adb1f0c83649872ddb5c37562d836f4f345058835f7f0e210fac1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}