{
  "manageEntity": {
    "action": "Save",
    "entityId": "592722938",
    "entityType": "Track",
    "nonce": "0x03d21263639241a4a9203964e6ee4c8797fc9746cb646b32dec0c2e145b5d47f",
    "signature": "0xa759c98336fc7f5b6cc7e616da40b277ef8d31263018990ad4f4c5285ddce38319ffa052a12aa9bdbf53034ea9f181ad98bf6b5a2d810aefe57b4267df7436901b",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}