{
  "manageEntity": {
    "action": "Save",
    "entityId": "138575",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xc938ab3037a7c4543f22ca3dede2fd8481d2b39e1c2e70eb6c02020876fc7bba",
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    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
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  }
}