{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x864557f3fd15a21a5cba1ace9399f0b4c8a7eb2c51c42536e289a061c2ed4847",
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    "signer": "0x15CbA89237A5fC345232C91176B89122A0EB777e",
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}