{
  "manageEntity": {
    "action": "Save",
    "entityId": "25352",
    "entityType": "Track",
    "nonce": "0x432b5a368757974d28495ba9c9a7d0b02c5d12885ddf652db58ad712d2fd6cd0",
    "signature": "0xe977089b82c73931c8ea0ef1b009eb85bd3d7e455144a4ad7f1d59dda18103fa373051aad3e32d52595cba32e2d277ab49053496058527db3e7095802cd764121c",
    "signer": "0x59765b22C96E88dA578af23E8611d6ca2dcCd7C9",
    "userId": "377610060"
  }
}