{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x7e5b3ff5ff84dc0f32f38e1f910cbad33078002dade094b31a9034ed4f42965f",
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    "signer": "0xF459aa69A07e0A6c9476Cf5A419Eae4CB82Be26F",
    "userId": "431363092"
  }
}