{
  "manageEntity": {
    "action": "Save",
    "entityId": "98186846",
    "entityType": "Track",
    "nonce": "0xfe5a645ad1e88c20d8fb56ea5bdc176864c11455981a91acfc4093cd69156cd3",
    "signature": "0x1ea3021bfec0c5f58ccf26df92bd317135182c2844c1fd3c7499a65ca3e7ba204a84d8193002290d7468cfc75c4a0e8adb6ca1ba6539ce3795b8ca805e7b50021b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}