{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x8a0801674869d69e929db66f85ae0f1341fffd4bf1a9ff6c2635d76e202db180",
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    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
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}