{
  "manageEntity": {
    "action": "Save",
    "entityId": "66758",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x1be529fb0ca842a09dc274dcc32352c5ab6fbe60fe8847b57b01481fb8f056d7",
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    "signer": "0x7e777EBa3114d70a87d94d8073a444911a00c100",
    "userId": "163260"
  }
}