{
  "manageEntity": {
    "action": "Save",
    "entityId": "1768744425",
    "entityType": "Track",
    "nonce": "0xb5397aca35a48bd24a8fc2a8c1a0c5b91587102ee906ea207e0db43535913278",
    "signature": "0x24895bf86f3989fecaac4b887df25360c4965ab68e8eadb7d8ea18d276228dc578b1ea2a57c4da5c8a79b618e268a1722b975eb75a48c8594bd549fcbe86780b1b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}