{
  "manageEntity": {
    "action": "Save",
    "entityId": "2074931134",
    "entityType": "Track",
    "nonce": "1792393736046775694",
    "signature": "0x49f10618748af0bd07169170305709293f21bfbd0531e40458a38e8861430bce37cdc5e56809f41eb1efc58da03517699e8966c9e5e20045cc7c4d6122c7f6671c",
    "signer": "0x9B241b1a6A99d662AE67D328e091Fc94faF23fdc",
    "userId": "881446128"
  }
}