{
"manageEntity": {
"action": "Save",
"entityId": "572097249",
"entityType": "Track",
"nonce": "0xb8b77509ce6fecea58d3d8a68ab6cfb9d66e0295f32fac39bcddcffd23ead853",
"signature": "0x396e20bdfcbe0e3e44b19eb7277f96bbcc73715d16b94543ac8183e797d7bdf731dddc4caa9002bb59f3fa262cca80fba14935eaa6a7286ae76c6061db51a5961c",
"signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
"userId": "854614078"
}
}