{
  "manageEntity": {
    "action": "Save",
    "entityId": "225137307",
    "entityType": "Track",
    "nonce": "0x55bbd82f5ba21db1a2da6e8450f137873d0d4eaaad4eaee0142b510bf939f00f",
    "signature": "0xe31c495aa3faca80c68aa0818938be376734c28fff310ecc93d64521521b9a6d79bc76d43dbe3c1501efe80ca0273b60351bef8b5c9053a96120ee9805772a071b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}