{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x2d88385655e218c12f964a2cae45150453021fa9547eb44f88236fb3aebcf3cd",
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    "signer": "0x105EC7a8DF8B80Eea9e50F67A2596ABf9Cf9687C",
    "userId": "718324785"
  }
}