{
  "manageEntity": {
    "action": "Save",
    "entityId": "2135340998",
    "entityType": "Track",
    "nonce": "1792541476929660927",
    "signature": "0x37d0455045b427bf2d98aeb94a0c2daf83461088d07ffab94e6af896774039a818353df793fa232303c86fd9d98394980126c857a48ed323e937f5b0e7fa1b061c",
    "signer": "0xE9e5656ce6F7Fe41FDbCA982901407eB55765cD3",
    "userId": "670307808"
  }
}