{
"manageEntity": {
"action": "Save",
"entityId": "848720931",
"entityType": "Track",
"nonce": "0x79280f33b8c7b6d45947b155b728a6bd09fcc07e26e6a36936e80873c8f8bdf2",
"signature": "0x9ded4cb97680c1b453ca01dc5670e285681d6258be98e8d54fe86e56505e23b75b8b248664e32f2a6099f424f444b117c4a741c7b72cffc08fb883286c3262601c",
"signer": "0x65b2681094e762CAD2349e6C1e2FbC8d54b9c046",
"userId": "11153747"
}
}