{
  "manageEntity": {
    "action": "Save",
    "entityId": "2039980696",
    "entityType": "Track",
    "nonce": "0x1b535e32ff238ed7c11f00d195b311af55d4291a3908690820f2a2343a693692",
    "signature": "0xd3ea569ceb3199f37d777687b626f1ec504e366279822c0c27fb38b0dd209eae5ef00a8bc96fdd9ce7f592c1da19e7f8ca6ba44a23c454c73b047f9c63177b6c1b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}