{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x241a89266df4e3090be0f3fbbfe0523d4ae30192667f32174eb9c024e66d7101",
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    "signer": "0xa5386E1DA6C9B1f6f482C34B8d04A84970da94A1",
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}