{
  "manageEntity": {
    "action": "Save",
    "entityId": "234792958",
    "entityType": "Track",
    "nonce": "0x21f948dc505622dd9383d4d085ddc587f21a6cb18235816f7f5a2f32dbac0eec",
    "signature": "0xc891afd09e72e539d7528a6fc9a833ba51299987468d690b859368bf92b10bdb5622f851769ed2ad27aad92e8abd6359e0fc08012f65d9f955ec54351f8cbc641b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}