{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x83d1641a52d926e662784989e51e5fd1876bfadcbfeb3e0ce98791650d704e61",
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    "signer": "0x8dA1fBb8C1638201E5bA074130AAfb0B7602199C",
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}