{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x694e03ff28a235563849dcf8a88b6ea874b4b1c45d0a504584f1293f54dc196d",
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    "signer": "0x3C2E92E01eaE8488e33eC019996123e37d53D39f",
    "userId": "735586682"
  }
}