{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x9d6ca8eb2b42858bcb023ac69c28dcf6961e3f7cba9f84a5ee92a92e5194b96f",
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    "signer": "0x79ed91D504150DBCef48Ce336ce668Effd2798DA",
    "userId": "894974913"
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}