{
  "manageEntity": {
    "action": "Save",
    "entityId": "1668414975",
    "entityType": "Track",
    "nonce": "0x93b9b86b0471c79b21c26f67f4b4aca02add21c78c13083ba460bea79f585c6c",
    "signature": "0x42c8895ae1848ece0ae4a0d35456cf816e8a082048071fd60914623d2e11d883506c5e23f1b79106ebb886c7303a3f053fada5ffa4e46afc9657dda5ef2571711b",
    "signer": "0x65EB59bb6C92a37Ff6b3c51d34c0aD3607F751cb",
    "userId": "305838"
  }
}