{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x37f47e6aa687f5771981fea899d45a62319ecb83bbe22821c83232621c434ad9",
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    "signer": "0xA4726dDaAF2af20D291A670299DaD1375F847b41",
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}