{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x91aefba52ace23362ec877fb706323cb48b555c231d033799ff046b63be26ab8",
    "signature": "0x4dd58321c1c268227696246e3e948e63dd93b5f50c0c3f8ad20bcbcaad7132a13ec41ec5d45f79e72b094770a3fb9d6ef31b8e0b3ddd91070ac40255702322a21b",
    "signer": "0x7D89eD1c2C9744b86AE1D1301E8F342289D2f3cB",
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  }
}