{
"manageEntity": {
"action": "Save",
"entityId": "598328130",
"entityType": "Track",
"nonce": "0x40a43ca4f2392ad98ca7c0f9325d1b2cb0dfc73af3da92f854589f85f4d11dd1",
"signature": "0xf0ef92fedb088b22327d85dfc9a35ea4f0cad66725a1d95f9013391b467e6e9b47fd389f7a47a0341fad759ad16b2fc170122bbb294a234b6ec72e0149f890001c",
"signer": "0xF7628Ea36C0C266E289b7538b033fB949A6C31ff",
"userId": "386745392"
}
}