{
  "manageEntity": {
    "action": "Save",
    "entityId": "1161905563",
    "entityType": "Track",
    "nonce": "0x650c0401b76212caa5c9c65e662a19dfa1da9fea2a809529077c8cf0c12334c0",
    "signature": "0x1e705419d420665409a864c9893fbb06126f69593eb4fb8614ada6cff35d74a71d09a2990ef1c816b53750825cbeaa96ef26fac2cae943a6977c99d68108e8811c",
    "signer": "0xEeea4f65FD2D7EffBC68176EAbe8544B088Aed57",
    "userId": "584616263"
  }
}