{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x50042afee4de28eb5a77f2bb3b974c6a1e85ba05bffc9c1edd010b5841475d80",
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    "signer": "0x69390eE85A40368f1dB502Dde4b1fc36a1850A33",
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}