{
  "manageEntity": {
    "action": "Save",
    "entityId": "1799883488",
    "entityType": "Track",
    "nonce": "0x492d6e69f56c0459f486e63699b35c425b61d99c39a9b519a632308bf2c8fce1",
    "signature": "0xbd71f59e55e4b2bee482c9861cb92f067d248814197361b5c24afe70b2a1183048105b1f540bd66d826ca188706770996c5fed44fb5a5957c0ef915512577bb31c",
    "signer": "0xdB791822A11f5aDc830669bdADa8121a4558D7A3",
    "userId": "347139808"
  }
}