{
"manageEntity": {
"action": "Save",
"entityId": "452763764",
"entityType": "Track",
"nonce": "0xa8c0d66dbe7747d9328f4100c74a3b551beab1adbf5b7e57a35a4b53b9776cb0",
"signature": "0x60c26fe12d00c42f450c41b59839d39a532e55445ce5fd4cf9a71554307e3b7163e52a5d03ff9da67960a94175b851bba4b36725fc865f0232c085de21db86e81b",
"signer": "0x9881bA04eA95d8a4De5594aBC9DBd5c96F38eF34",
"userId": "211307"
}
}