{
  "manageEntity": {
    "action": "Save",
    "entityId": "505413802",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xe041b02bffeca9db0fdcfcbfbfa3f32f17bbcb4e6163a6347e61526dfe2dd0cc",
    "signature": "0x1e360cb50de2d2ca57bfe63ff9f73417a04bdaefcfccc561513baf860b45f39876584005dba8008ed5429c988ae4fb5b2d494a007d79a7c6668765b842b0a5fe1b",
    "signer": "0xF08935327AeC6306C8d0eb92999567e5496848C9",
    "userId": "989073793"
  }
}