{
  "manageEntity": {
    "action": "Save",
    "entityId": "1347196354",
    "entityType": "Track",
    "nonce": "0x8e8d6e7c4c9a03752d65cd7ce530fb356d91acae38aec5faad6a71f31d957351",
    "signature": "0x04efc138c4ec8cb0edbaa8667dcd9a55907a90b71ad2417e02188700e256bcea3d43fcb13e7451e0ce069c1dbd66bc8feda13e129ed8f2786a2c498cc0f7d8901b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}