{
  "manageEntity": {
    "action": "Save",
    "entityId": "2097427074",
    "entityType": "Track",
    "nonce": "0x0d3e9e8190cd5a5e3cadb391dee2cdca6abc48847f3d8a65db6f70da19ab1b9f",
    "signature": "0x15e4731941623a338445b231b54139a6becd4ee309efe84c4667fa3fcdaab0c0710762b97afeae17492d7bb30c6421b9b8af02b2c5614be9a0faf84aa31b603f1c",
    "signer": "0x26Feee0AaDc0e2d8f7aBEd5cdb0bCD7D325F618d",
    "userId": "354535"
  }
}