{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xd70b7be758cb89df61ef41312bfc5356f66d5fe3d0be1a86cf397f61e848e2dd",
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    "signer": "0x1fDe6d81964c259F3D94149cE3B9DD47b325E6ff",
    "userId": "727824063"
  }
}