{
  "manageEntity": {
    "action": "Save",
    "entityId": "1717781812",
    "entityType": "Track",
    "nonce": "0x4f62f1f0e0ca02b0672bf4d2bbd4a14a72cecbd985750ff9ae93957b81757a36",
    "signature": "0xf23b4da61516ba248f12c3160c38191a5d5aef59cc15f23f1a999552cf4e330d01467e2fd0fc375eeb7e83b09699fcffe6036e1367f72fdf7b635b61481e74e21b",
    "signer": "0x05aba01c97C4F182D989670622abE9c797782dD2",
    "userId": "508263176"
  }
}