{
  "manageEntity": {
    "action": "Save",
    "entityId": "1611055196",
    "entityType": "Track",
    "nonce": "0x3162c85b7d59b1225924ae9423020b57a9c01f5f6137bbfd1ec5f1991248ff84",
    "signature": "0xd698c29654a4c2511fc778eaed2793bc59ff4f6eb549a5224b7e29e5b143a65c4a214abf79d3951de8ff957b9898da89b1affe7bd64040d37b8c775b8b450b3e1b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}