{
  "manageEntity": {
    "action": "Save",
    "entityId": "126534",
    "entityType": "Track",
    "nonce": "0x27f23e27e3b2c3730ea6375c54345ddc35475ec9dc7b310d4de050d1172d28de",
    "signature": "0xdf858b90ed1a911c843051095ab2ad20f10111e6c2efe38073c072651cf795ca2b04757ff44d9c45df8486399c08da4197531c2169768c25f645de3b723e7a5d1c",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}