{
  "manageEntity": {
    "action": "Save",
    "entityId": "1075894573",
    "entityType": "Track",
    "nonce": "0x829c2babac86e5daa428df943732a931539ead869a84a9672c8490e38b83d546",
    "signature": "0xe5b6243b2606fdbcda02ea3273ba2ed311acc21c9ed6c5bb155e7a24f920c14b35a36cb22eeafd6f712ab7b23d122543e6e6a6b1512580e8f0491f12bc70f7c21b",
    "signer": "0xdB791822A11f5aDc830669bdADa8121a4558D7A3",
    "userId": "347139808"
  }
}