{
  "manageEntity": {
    "action": "Save",
    "entityId": "2007278465",
    "entityType": "Track",
    "nonce": "0xa6c44b09fee45e903da6a74d974c575014e4af1842fc8205742870c9254066f4",
    "signature": "0x880ac20d72cd0ccc80212088040a3f6910a176cafd4db513176d72d1666459682496ea8449ea2edb003cdfad9e31ac7ea217eae6a39b40df791068ea1ec8cb401b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}