{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x3d0e0e4cb242aed02ec68f0c114f514ce4475ca8d93dc79e737af50ad66e2965",
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    "signer": "0x8a0f09823146A91B31F57911f5747e374529770D",
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}