{
  "manageEntity": {
    "action": "Save",
    "entityId": "1235555850",
    "entityType": "Track",
    "nonce": "0x3371d45c3b434d082df93e12abd39cf99090b7d6d79f0e163b492fa216de8d46",
    "signature": "0x9cf92e8cf02706cf22e608bc489816b31ebcee56f95513e8e16d69291ae138990b0eb12619025c6bfa551639c369e6d553dfe65d633ed9ea7926dd6beb3d6ee61c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}