{
  "manageEntity": {
    "action": "Save",
    "entityId": "1319422953",
    "entityType": "Track",
    "nonce": "0x16acc462a1a220d4044f50f51eb1115b326fcf5dfb6c02d8e2ca8fec401e3bfe",
    "signature": "0xc82ab313bee172e48a93e0119d895c278ed977615f34b962d260103ab525fdc109d8790d55f2a889ad0ce5904a0a73b43c779b4ca1b338b40397cc23a516f1401c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}