{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xedac9a39e503f5186d07cf799d9232300301436e9faf6537861a3be0cf5d5b25",
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    "signer": "0x836ba8b5354aBC22FC8D9990f473Ab61E2494DcB",
    "userId": "990192021"
  }
}