{
"manageEntity": {
"action": "Save",
"entityId": "200216146",
"entityType": "Track",
"nonce": "0x06a73a1e265a0d61e09aad599cf364c7544f134938c7dc5e1eae3e23abc4632f",
"signature": "0x50d3653d8ba1fd5d30cd0e6de9b4a9ba5ffa2f59c73b98d4c206c2aa8b681ce94253adf9ebb626d7c507462b2509570699574258c6ba1a3b4c8212f1954173451c",
"signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
"userId": "580720856"
}
}