{
  "manageEntity": {
    "action": "Save",
    "entityId": "565080181",
    "entityType": "Track",
    "nonce": "1787905148365093030",
    "signature": "0x8e8a8e463052db3db41614ded2bf1fa5089b258ec46e96df03687c32a42a639d3838de3e3b610bccbd366c383e12cc27a728e817809bb51fc19ace4ea26a95d81b",
    "signer": "0x23dF8876fD80368D375d911e3CbDFd15B8e85CB5",
    "userId": "827420993"
  }
}