{
  "manageEntity": {
    "action": "Save",
    "entityId": "1750641869",
    "entityType": "Track",
    "nonce": "1790516273905693142",
    "signature": "0x3bde6a826793e94156390503d29499794c8fe0ac242a0e3b3d10855eaf85afff062d717ee49c4ee4391798fd8a5c428a29c3268a0dfd76bf79d1f2bbd91335771b",
    "signer": "0x23dF8876fD80368D375d911e3CbDFd15B8e85CB5",
    "userId": "827420993"
  }
}