{
  "manageEntity": {
    "action": "Save",
    "entityId": "968972116",
    "entityType": "Track",
    "nonce": "0xd6c17fbbb8d35e916941a1d6d0f9391c1331af97eb00bfd94a6bab9dc341ee86",
    "signature": "0x2afbe80e2c17a8e9eb0e14e66f981ca7bfa9f6c00cff3488f7e6dd116493dbad50ce176c9c57fe1bee13d62988af9678b35067d2f17f0e9a2405ba554579cc071b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}