{
  "manageEntity": {
    "action": "Save",
    "entityId": "835004496",
    "entityType": "Track",
    "nonce": "0xbc9eb2d9c4a058f92f42cb2b4157f49e900e670138493a0d93e13653564b99b1",
    "signature": "0x7f7af52470f747e9a05116f7f4d09de3c7f173817c61775d76f790896b95b5b4581158f8e67285fab59d83e2a6a1ed4806d8a22d5cf968492ecf833e4e588f421b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}