{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x8ee10464b9751f9e16e00aa3783fc2e8f69bc11d641a090fd8046b0888afa0bd",
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    "signer": "0x651B61300cc750c67eAFaCdD6eC7968007A19bfD",
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}