{
  "manageEntity": {
    "action": "Save",
    "entityId": "1643905025",
    "entityType": "Track",
    "nonce": "0x0017b03b4436c80a00b3b9ef19cf42439d18a3725fea09bb45109b4264ee3b84",
    "signature": "0x9a07099fdd76e434e8b554df40bf7bb8867cafab6e6b31c9e0dadcd9c2f5a4ed3e7a45c19755f6b97fa3c868733d384962de52f873fcf699f3ffd4377ea751441b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}