{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xd08a3de24550c0ec94db8bc2a8bfae881eb81fe94c0f7908e3499b7bf413254e",
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    "signer": "0xA1126d3f1652629109D872d1aec07Dc2Ef6Bb6f1",
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}