{
  "manageEntity": {
    "action": "Save",
    "entityId": "2052858140",
    "entityType": "Track",
    "nonce": "0x5afbd07ba1508895a7213be0d317c97abec5392df9f23922765d95a70c9488ae",
    "signature": "0x403262c007a426ed411bbf84d89e34cb47d34a786d994924bf30f6f2abfa924b7f25fba0fa68a225d9379cc0bc6ee3adf4e1592813f3e287d0276a471ab8b5a51c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}