{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x447b88492e26dc2e9decd7187220f817b6a0070b9135e1bf870e0b096d21eb10",
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    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
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}