{
  "manageEntity": {
    "action": "Save",
    "entityId": "1673567369",
    "entityType": "Track",
    "nonce": "0xdea4a3c7c213913fcf9670fda72b20ee8060548acfc65decadc94b0d3d8a6928",
    "signature": "0x9da39b096ec6a3efde931441207f63c8ced65ba7a0e11e465a6f04f6b9a6534d23435f2357a0b40d71fa81a76f6c217f82c65eb861b951b7265033957d981d1d1c",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}