{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xa26c4c9827bd71ee2d82a7b54186680907c94f666cb649b5f8e801ba07f5c87d",
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    "signer": "0xa9F79B22c01cCa5D2eE21cA378895B1A2F9A8b80",
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}