{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x7a128c6ae758327288218f9b923c732d86af8ba0625daca8ceba3d8f8519887d",
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    "signer": "0xaa2D7DaF1955F72c579f359aAa82DFbf25A83b5a",
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}