{
  "manageEntity": {
    "action": "Save",
    "entityId": "1692772286",
    "entityType": "Track",
    "nonce": "0x5d5c35bcb37299916f1316f0b28f5d793467b6ec41c5591f54669b6b741bed9a",
    "signature": "0x8e85d8005f75dfa9b2e08eacb9ee2ac145a710517334b054c251f8c78c7078287b9bcd3c5d3df0bc944e9751e85ab7151c1e04db064d86e6363b8f24db49fc721b",
    "signer": "0x7425EdbFdF528603A88c658f4cf8B1396a8a77F5",
    "userId": "406225571"
  }
}