{
  "manageEntity": {
    "action": "Save",
    "entityId": "80002",
    "entityType": "Track",
    "nonce": "0xc4006e64732408458b67f8252316096f2cfbab74cf04594cd344663b7b27be59",
    "signature": "0xd691e9a51d7c61cd7e3375419e17ae1b2da2d4ab44b901f9fb424d5ad888443664c5186159dcf8946e2c2cae5c3fa3f111075339b6a56416421c84cc0b8c07e81c",
    "signer": "0x7425EdbFdF528603A88c658f4cf8B1396a8a77F5",
    "userId": "406225571"
  }
}