{
  "manageEntity": {
    "action": "Save",
    "entityId": "196214686",
    "entityType": "Track",
    "nonce": "0x23e675820a4a91b343e9bfd9263c7002909156b97eca3ded466ea79ff8a2ad57",
    "signature": "0x060f6bb92e47e91af03449b8e3355a7a77fdee5644356064c01d7455a2d7d93240c30513c70dcdc16966a3f3cacc1d793a594d20ef8a5c7c4797a47277cae9591b",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}