{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x222f590a2c73f5f129b63258243af711dbca42786493bf1dba292cac0364f7ec",
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    "signer": "0x8FBba6a789c135b0321E812D6F302c125Bb3Ff5B",
    "userId": "773473058"
  }
}