{
  "manageEntity": {
    "action": "Save",
    "entityId": "92570",
    "entityType": "Track",
    "nonce": "0x2a3a39e99d913a2fbb9eed5850ccf1b49c8b4c74d1916d07d37c969636eec7e1",
    "signature": "0x3cdc5caaa917e173ad921c32efba4a9b580f28141438ad0106f5b329217d057878f17ecbca6c765083ae51e9c63a58b9a5449e399f763b55b79c485a542595231c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}