{
  "manageEntity": {
    "action": "Save",
    "entityId": "895771712",
    "entityType": "Track",
    "nonce": "0x872aace841bcbbefbc61231402c92970c697e0d4dc6c334ba9fd60155f316213",
    "signature": "0x14fcbbef0c71f3be9a4b6e365811f3872de2a41d9298f656530a28f2754e55e23af216e91b9e1dd17d369f214bc8fe3e9e869da51275f32da58fd57c6601b0e21c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}