{
  "manageEntity": {
    "action": "Save",
    "entityId": "169106",
    "entityType": "Track",
    "nonce": "0x694dd6b849641e380ba5c553b9ad757e83f261d787ddefe3405e0f66e18eb876",
    "signature": "0xcccc953defdb276cfd4530c7fde461200061e1c8ec94a71f296d95ce046ab5502e61ea527e98bc2a6395b56ce771d72a101530646fe2386336f816257d6b94371b",
    "signer": "0xe270C91f9476B885124d6c0208211213dC10036a",
    "userId": "94825285"
  }
}