{
  "manageEntity": {
    "action": "Save",
    "entityId": "2064239270",
    "entityType": "Track",
    "nonce": "0x5b89e1d84c6c1fd73bf60adc2b31d3253c8a2463f93dcd86f5cbfbdb9e4d188e",
    "signature": "0x5bc2455f8e06923da0a82970eebd908b918ff0716d1796856af9087dfcd85a317605421910dee1b2bb4ddaae97f7664f872faa63280c7f00f8779dd8c451ed071b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}