{
  "manageEntity": {
    "action": "Save",
    "entityId": "270645737",
    "entityType": "Track",
    "nonce": "1787429715178754722",
    "signature": "0xcf92ad691a8468dcf3fc2e73770f16a93bc1f4b08601d3151dc50a2b0897ecf27525b787796a4116dc25f3b04baf30bc6310db4e2cb869b374e99238d3bdd6cf1b",
    "signer": "0x23dF8876fD80368D375d911e3CbDFd15B8e85CB5",
    "userId": "827420993"
  }
}