{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xdb58091a8f0deae5247f88cc6f51403ded087769371ac7096b83d05affce0b6f",
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    "signer": "0x27A2f02cB0876AB8c3F17D0b43DADbbb9ccBF747",
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}