{
  "manageEntity": {
    "action": "Save",
    "entityId": "51351",
    "entityType": "Track",
    "nonce": "0x82f17efc54afc584505cd6747e2e5d7f31a68171d3b836901ac66801cc72fda1",
    "signature": "0x093ae9461812ef5699b6f590e5a7fb774142dfb66499e5a6bd523493d1881ad3794d9803b01bf433f04c53e096f8de21b5a3ffde1af806087c19fbc435d7d2841b",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}