{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x7f05288f9019e2b11b09c327d98931aed83b53b6acd7818f878dd7a9f46c1550",
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    "signer": "0x2CdfB6BCf53D9E77fd3391b1C6eA83B432D6f3F3",
    "userId": "422437197"
  }
}