{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6113f0867c67a65b2d3cf2aedd8887a4976e8154b7e61c6848a12b086b3a3787",
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    "signer": "0x66B665e303AbC7B547D5F08Bf8F21f930453d41B",
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  }
}