{
"manageEntity": {
"action": "Save",
"entityId": "1912641587",
"entityType": "Track",
"nonce": "0x0529b8959310515bdd4577ace1bba40a9678fb68de71bbf9a65ac7d3ee64f52b",
"signature": "0xb8e06577c2053925e0a6b159f731890e540993bcd80d8bb3d6aa85e6709ca4310cbc4b99b299d018b466047a6a94b8d6411c35d957804330d874d8e04191be671c",
"signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
"userId": "854614078"
}
}