{
  "manageEntity": {
    "action": "Save",
    "entityId": "338232720",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6b416e3e775c647a459c126a317354b96b3fbd219bc6cffdf469781ced1b491c",
    "signature": "0x5f55322a5764441dc8aae366d2c6223ab05e5f76781844322d0e119d9d11c9206cb10e187f0e3d17f8414940f783e5cf481c1fcad203e849bbb18d4eefc7bf471b",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}