{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xe3b89c680bc836c3464cd0b4317808547fad3f05a63f6db939fcc97d9345aa7d",
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    "signer": "0xd156E497e2c5A5b65719fc966F08a67542d55c88",
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}