{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x309bba81d2d85c061470d0837fd2c34ec2ba8261701ec7ad3b921c6f718439c3",
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    "signer": "0x296F74dc3f08361c205B5172FEb1D3ecbeb5908B",
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  }
}