{
  "manageEntity": {
    "action": "Save",
    "entityId": "1913140587",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xdd5fe65bb0885ed3f9e5ff831d8632d5e4caae4475fb3d73c37de56cd6f9e4a8",
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    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
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}