{
  "manageEntity": {
    "action": "Save",
    "entityId": "103009",
    "entityType": "Track",
    "nonce": "0xcc4a4c66af8cb1e63866c15eae5b1ebdf4ebef717bf4595e077ecd457ef191e6",
    "signature": "0x4eb9852ea53a478cf5e269ea25faf46fed087220cb7de5d785507fc59d95534f7637d214e03f6d427467b3fd98cafa8c3d779324d70f6cb71387ea53c11b812a1b",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}