{
  "manageEntity": {
    "action": "Save",
    "entityId": "2147229196",
    "entityType": "Track",
    "nonce": "0xa95d5cdf2951d84a4fb8a10130c843bbda103dee1d2a035c3a12b82c48419f10",
    "signature": "0xe87c5cc4013835bd1128927bcd52ae6e17462a7b81c0d660d1c5ad2bdf39e5a937cdb57f505b309f0cad4336eebd2f925b52dbf1ffa542eb831028df705e765c1c",
    "signer": "0x7425EdbFdF528603A88c658f4cf8B1396a8a77F5",
    "userId": "406225571"
  }
}