{
  "manageEntity": {
    "action": "Save",
    "entityId": "1713374251",
    "entityType": "Track",
    "nonce": "0x08c1b7852470f1dd8ac259e34473950b3ea23b10ded2fac57c19f259a91fc93c",
    "signature": "0x592320a62cefaa6a3a4623d45698dacaba96fbc3c35eba4abfaf8855d604771d255da072cf47d027870b244807b3b3c18897c838ddd5dd3ebbaad0f16e8285d31b",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}