{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x2fd401fd12ff897f3e2332fe0b32b0fbf72a511a3589bfbbadfa13b0b37fe345",
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    "signer": "0x4cC4772F137BeAC749Ff7491b50b11478bB53fa4",
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  }
}