{
  "manageEntity": {
    "action": "Save",
    "entityId": "1735068878",
    "entityType": "Track",
    "nonce": "0x9ee68bc3dc4d3b239c00a7725c35d5b0f78454da08be1e78252aa29f864f8efd",
    "signature": "0x627fdd2349e17132c004d223dfa948e24e2af7e5be0579de8cb095d67baa60706f29f68efbe38e93fc93fdf8cda4b8b9782d05234e44884faab132dcd310a2c11c",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}