{
  "manageEntity": {
    "action": "Save",
    "entityId": "1960897973",
    "entityType": "Track",
    "nonce": "0xc28da3a4f8b889e76561666056accc113f6adf8fe9d9e42a0ca57997cf699c18",
    "signature": "0x08bc84e6be3fbf37dd5efeca6b627ac7f1aecdfbfe4f9a7eeb8dc41b3e05d03f72ca679491b3e15a0a303281b242f02c60843629392a4c2c98037bf40d22db581c",
    "signer": "0x36FE3d24284981316dB1bd72F676C29F45F0C339",
    "userId": "73554182"
  }
}