{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6c0f9fbc4637e43e685200b34b3cf0976e0344cc6d0545f4b77b8001e1a7d24c",
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    "signer": "0x8E172f61ee2C8043C1511347070FDFe560944Cb4",
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}