{
  "manageEntity": {
    "action": "Save",
    "entityId": "2090540470",
    "entityType": "Track",
    "nonce": "0x52dbe93a00c04f2f09ae7a769e317ed5f62552e8790e4a2da1fde58c9dfc52f2",
    "signature": "0x0898622f51454e64b1e23fb1bceff2dde9fd40112daaa5a9879e7f6b60e3144e381ff3bbcf5537e50921718db87a2788c126e3d83cfaed718f90967ff4dc3e151c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}