{
  "manageEntity": {
    "action": "Save",
    "entityId": "109132",
    "entityType": "Track",
    "nonce": "0xa1a111bf2a0ae8613d7aedd2191915c52fdf9fa5da812e12fa705d2bab518a24",
    "signature": "0x2f580aa0ce092ac7bf2eeb5c6dc93d2922e05898484bab50a48861708b23bc74419f1966506c5b30d4fe4fb58f43cd54e778ff1264435230328621a0dc3fe4561b",
    "signer": "0x3324C23609BC25902C39CFa38CF40581c7Bc7F87",
    "userId": "229134011"
  }
}