{
  "manageEntity": {
    "action": "Save",
    "entityId": "420242680",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x5fbdd89138547f44004d325226231573e5e97fe56b245495b40c3386841feab1",
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    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
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}