{
"manageEntity": {
"action": "Save",
"entityId": "1901617157",
"entityType": "Track",
"nonce": "0xd31175c021cf553cef830835b9960eb56db259e1e797d5b920421457d6fc66e2",
"signature": "0xe5c9f773610e2258907af00ea70079c0ac672cfd8f128246de5a632d26d49f487862d6d6ffb895e705fc1f8971830c28cd930f282562ab591a4cbd47e9de8fab1c",
"signer": "0x24844077bE6bb825c0548F36B4EFA030d05Ee1CD",
"userId": "601282125"
}
}