{
  "manageEntity": {
    "action": "Save",
    "entityId": "60327322",
    "entityType": "Track",
    "nonce": "0x2a064fac804fb92133a04303dd15abd329c2e77dd6b304587dbdc78a002e5da9",
    "signature": "0x889e161f587b3503fb26039c78c6f209ee1429623d9fdfe91c41d1a1e714467b62282ebf63f9e5591c322db80e803441fca391c3a723073f108371f487402e1c1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}