{
  "manageEntity": {
    "action": "Save",
    "entityId": "643862152",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xf580c8e3c8858b218b810b44addaa000f1f4d3ec840af5be78bd503d48ba7649",
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    "signer": "0x956362Be3Eafa2C07Ef5Dcf41cf05B9ac86E0d4E",
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}