{
  "manageEntity": {
    "action": "Save",
    "entityId": "1797394092",
    "entityType": "Track",
    "nonce": "0x36f89f0b19562b810ccf01b3f749a5521a137d848005fbcf38212763858a25ee",
    "signature": "0x94f436caed974c7360a79fa8e3b7bfdf4d0e2190afed867805aec54a675f908040c779f49c477ea0adcac2757d3c56432d7f1294ca28f1be2f79a23fe40c411b1c",
    "signer": "0x59765b22C96E88dA578af23E8611d6ca2dcCd7C9",
    "userId": "377610060"
  }
}