{
  "manageEntity": {
    "action": "Save",
    "entityId": "1461700974",
    "entityType": "Track",
    "nonce": "1791886861217066144",
    "signature": "0x37ad43781928214406eaa0ae1731144f4cd92f2a3996b3b5bebecf687b6aa1cf70b55a547a4d4a2afced3d9c337a3c364cba2ac05b141672094f925b2e28cd4a1c",
    "signer": "0x9B241b1a6A99d662AE67D328e091Fc94faF23fdc",
    "userId": "881446128"
  }
}