{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x499f6d32a672195c64653b0fa5c9a178e4993e01729885fcc4ffcfead860a23f",
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    "signer": "0xCc5Aed9BE826c627caA43395e3D4a4901C038d11",
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}