{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x00cd02bd4e70a15da5d8acf21f7fe88474826cf9b9f5fa1e78d02cec85dc64af",
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    "signer": "0x2FC8ee16470A60117603F84C8f2b6694A7678b35",
    "userId": "575151774"
  }
}