{
  "manageEntity": {
    "action": "Save",
    "entityId": "1577292845",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x01779e14c1c9b2bfd3354e2c9c9cf454ff5901da5f413e8fd7833981da3855f0",
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    "signer": "0x0a5148A3f132E6696c1Cd3FDA8465fC5fF17d3D2",
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}