{
  "manageEntity": {
    "action": "Save",
    "entityId": "111707352",
    "entityType": "Track",
    "nonce": "0x7fda425e217848592eaeb81bf2e8a10917ae558d791a30d417012a476c9bd9c8",
    "signature": "0x9c67e1bd725275132d5859ebf70f2e8df909116603dbad9377b916ec5c09839f773df76ace85b74603fb7fee5126c9556f5af3e1ff6950498a14ba99d8b1f3641c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}