{
  "manageEntity": {
    "action": "Save",
    "entityId": "76329054",
    "entityType": "Track",
    "nonce": "1792424460577070830",
    "signature": "0xdc2c6847189e953a81887d10b439e12dbc6cdd57fece20db06663fc0a570c251293f5e3606471b1238127f05cc1a21cceb159fe671836f289ad05a6798a7bfe51c",
    "signer": "0x23dF8876fD80368D375d911e3CbDFd15B8e85CB5",
    "userId": "827420993"
  }
}