{
"manageEntity": {
"action": "Save",
"entityId": "1445193771",
"entityType": "Track",
"nonce": "0x6e6cc6cf6cd24692a5115d25489c9eb283bd5c8d02b6ba024e9cd57d9647aa49",
"signature": "0x8839e03bc7cd01db6279059f6e98e95f44532aef3371a79853a353ed32a9412815bf0c0b71814253704bbc8b27d3ccf199770a6c7de7aaab90f9abaea637dea11b",
"signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
"userId": "636236864"
}
}