{
  "manageEntity": {
    "action": "Save",
    "entityId": "208386969",
    "entityType": "Track",
    "nonce": "0xc6ab2559428734a10e9690bac52c6a7007b4217cdbe3fb72c8d1fae3624adda2",
    "signature": "0x4017329e6ec32bad9d1903fe3058249f2aaf37095bc810491974c017d054d52e28dac797d047d5eb0934a62b858c148fb564b5e37cd8784d215f8c67d05ec6121b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}