{
  "manageEntity": {
    "action": "Save",
    "entityId": "569631061",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x8568ac4a474e64bbc8673c34120ec69f3462932aab69d5efd4b43ee2f512a64d",
    "signature": "0x1578a9dd5a5b0d803e605964b686fc85c017bb5c6049b8f4c69634fbfad5abfc2778c6de3adf785c099fd6292160cce8b8aa6442dddfdf57acf18659a1fd704e1b",
    "signer": "0xF08935327AeC6306C8d0eb92999567e5496848C9",
    "userId": "989073793"
  }
}